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• MAMP + Python MySQLDB - trouble installing

  - by Frederico

  I'm currently running the latest version of MAMP on my Snow Leopard OSX, and I'm trying to install MySQLDB. Downloaded: MySQL-python-1.2.3c1 I went into the setup_posix.py and adjusted the location of the mysql_config to the one in MAMP: mysql_config.path = "/Applications/MAMP/Library/bin/mysql_config" When trying to build I get the error below. Could anyone give me a hand please: creating build/temp.macosx-10.6-universal-2.6 gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch i386 -arch ppc -arch x86_64 -pipe -Dversion_info=(1,2,3,'gamma',1) -D_version_=1.2.3c1 -I/Applications/MAMP/Library/include/mysql -I/System/Library/Frameworks/Python.framework/Versions/2.6/include/python2.6 -c _mysql.c -o build/temp.macosx-10.6-universal-2.6/_mysql.o -fno-omit-frame-pointer -D_P1003_1B_VISIBLE -DSIGNAL_WITH_VIO_CLOSE -DSIGNALS_DONT_BREAK_READ -DIGNORE_SIGHUP_SIGQUIT -DDONT_DECLARE_CXA_PURE_VIRTUAL _mysql.c:36:23: error: my_config.h: No such file or directory _mysql.c:38:19: error: mysql.h: No such file or directory _mysql.c:39:26: error: mysqld_error.h: No such file or directory _mysql.c:40:20: error: errmsg.h: No such file or directory _mysql.c:76: error: expected specifier-qualifier-list before ‘MYSQL’ _mysql.c:90: error: expected specifier-qualifier-list before ‘MYSQL_RES’ _mysql.c: In function ‘_mysql_Exception’: _mysql.c:120: warning: implicit declaration of function ‘mysql_errno’ _mysql.c:120: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:123: error: ‘CR_MAX_ERROR’ undeclared (first use in this function) _mysql.c:123: error: (Each undeclared identifier is reported only once _mysql.c:123: error: for each function it appears in.) _mysql.c:131: error: ‘CR_COMMANDS_OUT_OF_SYNC’ undeclared (first use in this function) _mysql.c:132: error: ‘ER_DB_CREATE_EXISTS’ undeclared (first use in this function) _mysql.c:133: error: ‘ER_SYNTAX_ERROR’ undeclared (first use in this function) _mysql.c:134: error: ‘ER_PARSE_ERROR’ undeclared (first use in this function) _mysql.c:135: error: ‘ER_NO_SUCH_TABLE’ undeclared (first use in this function) _mysql.c:136: error: ‘ER_WRONG_DB_NAME’ undeclared (first use in this function) _mysql.c:137: error: ‘ER_WRONG_TABLE_NAME’ undeclared (first use in this function) _mysql.c:138: error: ‘ER_FIELD_SPECIFIED_TWICE’ undeclared (first use in this function) _mysql.c:139: error: ‘ER_INVALID_GROUP_FUNC_USE’ undeclared (first use in this function) _mysql.c:140: error: ‘ER_UNSUPPORTED_EXTENSION’ undeclared (first use in this function) _mysql.c:141: error: ‘ER_TABLE_MUST_HAVE_COLUMNS’ undeclared (first use in this function) _mysql.c:170: error: ‘ER_DUP_ENTRY’ undeclared (first use in this function) _mysql.c:213: warning: implicit declaration of function ‘mysql_error’ _mysql.c:213: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:213: warning: passing argument 1 of ‘PyString_FromString’ makes pointer from integer without a cast _mysql.c: In function ‘_mysql_server_init’: _mysql.c:308: warning: label ‘finish’ defined but not used _mysql.c:234: warning: unused variable ‘item’ _mysql.c:233: warning: unused variable ‘groupc’ _mysql.c:233: warning: unused variable ‘i’ _mysql.c:233: warning: unused variable ‘cmd_argc’ _mysql.c:232: warning: unused variable ‘s’ _mysql.c: In function ‘_mysql_ResultObject_Initialize’: _mysql.c:363: error: ‘MYSQL_RES’ undeclared (first use in this function) _mysql.c:363: error: ‘result’ undeclared (first use in this function) _mysql.c:368: error: ‘MYSQL_FIELD’ undeclared (first use in this function) _mysql.c:368: error: ‘fields’ undeclared (first use in this function) _mysql.c:377: error: ‘_mysql_ResultObject’ has no member named ‘use’ _mysql.c:380: warning: implicit declaration of function ‘mysql_use_result’ _mysql.c:380: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:382: warning: implicit declaration of function ‘mysql_store_result’ _mysql.c:382: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:383: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:386: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:389: warning: implicit declaration of function ‘mysql_num_fields’ _mysql.c:390: error: ‘_mysql_ResultObject’ has no member named ‘nfields’ _mysql.c:391: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:392: warning: implicit declaration of function ‘mysql_fetch_fields’ _mysql.c:438: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c: In function ‘_mysql_ResultObject_traverse’: _mysql.c:450: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:451: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c: In function ‘_mysql_ResultObject_clear’: _mysql.c:462: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:462: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:462: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:462: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:463: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c: In function ‘_mysql_ConnectionObject_Initialize’: _mysql.c:475: error: ‘MYSQL’ undeclared (first use in this function) _mysql.c:475: error: ‘conn’ undeclared (first use in this function) _mysql.c:500: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:501: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:525: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:547: warning: implicit declaration of function ‘mysql_init’ _mysql.c:547: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:550: warning: implicit declaration of function ‘mysql_options’ _mysql.c:550: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:550: error: ‘MYSQL_OPT_CONNECT_TIMEOUT’ undeclared (first use in this function) _mysql.c:554: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:554: error: ‘MYSQL_OPT_COMPRESS’ undeclared (first use in this function) _mysql.c:555: error: ‘CLIENT_COMPRESS’ undeclared (first use in this function) _mysql.c:558: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:558: error: ‘MYSQL_OPT_NAMED_PIPE’ undeclared (first use in this function) _mysql.c:560: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:560: error: ‘MYSQL_INIT_COMMAND’ undeclared (first use in this function) _mysql.c:562: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:562: error: ‘MYSQL_READ_DEFAULT_FILE’ undeclared (first use in this function) _mysql.c:564: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:564: error: ‘MYSQL_READ_DEFAULT_GROUP’ undeclared (first use in this function) _mysql.c:567: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:567: error: ‘MYSQL_OPT_LOCAL_INFILE’ undeclared (first use in this function) _mysql.c:575: warning: implicit declaration of function ‘mysql_real_connect’ _mysql.c:575: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:590: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c: In function ‘_mysql_ConnectionObject_traverse’: _mysql.c:671: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:672: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c: In function ‘_mysql_ConnectionObject_clear’: _mysql.c:680: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:680: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:680: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:680: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:681: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c: In function ‘_mysql_ConnectionObject_close’: _mysql.c:696: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:698: warning: implicit declaration of function ‘mysql_close’ _mysql.c:698: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:700: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c: In function ‘_mysql_ConnectionObject_affected_rows’: _mysql.c:722: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:723: warning: implicit declaration of function ‘mysql_affected_rows’ _mysql.c:723: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_debug’: _mysql.c:739: warning: implicit declaration of function ‘mysql_debug’ _mysql.c: In function ‘_mysql_ConnectionObject_dump_debug_info’: _mysql.c:757: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:759: warning: implicit declaration of function ‘mysql_dump_debug_info’ _mysql.c:759: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_autocommit’: _mysql.c:783: warning: implicit declaration of function ‘mysql_query’ _mysql.c:783: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_commit’: _mysql.c:806: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_rollback’: _mysql.c:828: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_errno’: _mysql.c:940: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:941: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_error’: _mysql.c:956: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:957: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:957: warning: passing argument 1 of ‘PyString_FromString’ makes pointer from integer without a cast _mysql.c: In function ‘_mysql_escape_string’: _mysql.c:981: warning: implicit declaration of function ‘mysql_escape_string’ _mysql.c: In function ‘_mysql_escape’: _mysql.c:1088: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c: In function ‘_mysql_ResultObject_describe’: _mysql.c:1168: error: ‘MYSQL_FIELD’ undeclared (first use in this function) _mysql.c:1168: error: ‘fields’ undeclared (first use in this function) _mysql.c:1171: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1172: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1173: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1184: warning: implicit declaration of function ‘IS_NOT_NULL’ _mysql.c: In function ‘_mysql_ResultObject_field_flags’: _mysql.c:1204: error: ‘MYSQL_FIELD’ undeclared (first use in this function) _mysql.c:1204: error: ‘fields’ undeclared (first use in this function) _mysql.c:1207: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1208: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1209: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c: At top level: _mysql.c:1250: error: expected declaration specifiers or ‘...’ before ‘MYSQL_ROW’ _mysql.c: In function ‘_mysql_row_to_tuple’: _mysql.c:1256: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1258: warning: implicit declaration of function ‘mysql_fetch_lengths’ _mysql.c:1258: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1258: warning: assignment makes pointer from integer without a cast _mysql.c:1261: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:1262: error: ‘row’ undeclared (first use in this function) _mysql.c: At top level: _mysql.c:1275: error: expected declaration specifiers or ‘...’ before ‘MYSQL_ROW’ _mysql.c: In function ‘_mysql_row_to_dict’: _mysql.c:1280: error: ‘MYSQL_FIELD’ undeclared (first use in this function) _mysql.c:1280: error: ‘fields’ undeclared (first use in this function) _mysql.c:1282: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1284: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1284: warning: assignment makes pointer from integer without a cast _mysql.c:1285: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1288: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:1289: error: ‘row’ undeclared (first use in this function) _mysql.c: At top level: _mysql.c:1314: error: expected declaration specifiers or ‘...’ before ‘MYSQL_ROW’ _mysql.c: In function ‘_mysql_row_to_dict_old’: _mysql.c:1319: error: ‘MYSQL_FIELD’ undeclared (first use in this function) _mysql.c:1319: error: ‘fields’ undeclared (first use in this function) _mysql.c:1321: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1323: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1323: warning: assignment makes pointer from integer without a cast _mysql.c:1324: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1327: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:1328: error: ‘row’ undeclared (first use in this function) _mysql.c: At top level: _mysql.c:1350: error: expected declaration specifiers or ‘...’ before ‘MYSQL_ROW’ _mysql.c: In function ‘mysql_fetch_row’: _mysql.c:1361: error: ‘MYSQL_ROW’ undeclared (first use in this function) _mysql.c:1361: error: expected ‘;’ before ‘row’ _mysql.c:1365: error: ‘_mysql_ResultObject’ has no member named ‘use’ _mysql.c:1366: error: ‘row’ undeclared (first use in this function) _mysql.c:1366: warning: implicit declaration of function ‘mysql_fetch_row’ _mysql.c:1366: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1369: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:1372: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:1380: error: too many arguments to function ‘convert_row’ _mysql.c: In function ‘_mysql_ResultObject_fetch_row’: _mysql.c:1404: error: expected declaration specifiers or ‘...’ before ‘MYSQL_ROW’ _mysql.c:1419: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1431: error: ‘_mysql_ResultObject’ has no member named ‘use’ _mysql.c:1445: warning: implicit declaration of function ‘mysql_num_rows’ _mysql.c:1445: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c: In function ‘_mysql_ConnectionObject_character_set_name’: _mysql.c:1512: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c: In function ‘_mysql_get_client_info’: _mysql.c:1603: warning: implicit declaration of function ‘mysql_get_client_info’ _mysql.c:1603: warning: passing argument 1 of ‘PyString_FromString’ makes pointer from integer without a cast _mysql.c: In function ‘_mysql_ConnectionObject_get_host_info’: _mysql.c:1617: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1618: warning: implicit declaration of function ‘mysql_get_host_info’ _mysql.c:1618: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:1618: warning: passing argument 1 of ‘PyString_FromString’ makes pointer from integer without a cast _mysql.c: In function ‘_mysql_ConnectionObject_get_proto_info’: _mysql.c:1632: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1633: warning: implicit declaration of function ‘mysql_get_proto_info’ _mysql.c:1633: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_get_server_info’: _mysql.c:1647: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1648: warning: implicit declaration of function ‘mysql_get_server_info’ _mysql.c:1648: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:1648: warning: passing argument 1 of ‘PyString_FromString’ makes pointer from integer without a cast _mysql.c: In function ‘_mysql_ConnectionObject_info’: _mysql.c:1664: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1665: warning: implicit declaration of function ‘mysql_info’ _mysql.c:1665: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:1665: warning: assignment makes pointer from integer without a cast _mysql.c: In function ‘_mysql_ConnectionObject_insert_id’: _mysql.c:1697: error: ‘my_ulonglong’ undeclared (first use in this function) _mysql.c:1697: error: expected ‘;’ before ‘r’ _mysql.c:1699: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1701: error: ‘r’ undeclared (first use in this function) _mysql.c:1701: warning: implicit declaration of function ‘mysql_insert_id’ _mysql.c:1701: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_kill’: _mysql.c:1718: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1720: warning: implicit declaration of function ‘mysql_kill’ _mysql.c:1720: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_field_count’: _mysql.c:1739: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1741: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ResultObject_num_fields’: _mysql.c:1756: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1757: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c: In function ‘_mysql_ResultObject_num_rows’: _mysql.c:1772: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1773: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c: In function ‘_mysql_ConnectionObject_ping’: _mysql.c:1802: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1803: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:1805: warning: implicit declaration of function ‘mysql_ping’ _mysql.c:1805: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_query’: _mysql.c:1826: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1828: warning: implicit declaration of function ‘mysql_real_query’ _mysql.c:1828: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_select_db’: _mysql.c:1856: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1858: warning: implicit declaration of function ‘mysql_select_db’ _mysql.c:1858: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_shutdown’: _mysql.c:1877: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1879: warning: implicit declaration of function ‘mysql_shutdown’ _mysql.c:1879: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_stat’: _mysql.c:1904: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1906: warning: implicit declaration of function ‘mysql_stat’ _mysql.c:1906: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:1906: warning: assignment makes pointer from integer without a cast _mysql.c: In function ‘_mysql_ConnectionObject_store_result’: _mysql.c:1927: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1928: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:1937: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c: In function ‘_mysql_ConnectionObject_thread_id’: _mysql.c:1966: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1968: warning: implicit declaration of function ‘mysql_thread_id’ _mysql.c:1968: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ConnectionObject_use_result’: _mysql.c:1988: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:1989: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:1998: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c: In function ‘_mysql_ConnectionObject_dealloc’: _mysql.c:2016: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c: In function ‘_mysql_ConnectionObject_repr’: _mysql.c:2028: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:2029: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c: In function ‘_mysql_ResultObject_data_seek’: _mysql.c:2047: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:2048: warning: implicit declaration of function ‘mysql_data_seek’ _mysql.c:2048: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c: In function ‘_mysql_ResultObject_row_seek’: _mysql.c:2061: error: ‘MYSQL_ROW_OFFSET’ undeclared (first use in this function) _mysql.c:2061: error: expected ‘;’ before ‘r’ _mysql.c:2063: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:2064: error: ‘_mysql_ResultObject’ has no member named ‘use’ _mysql.c:2069: error: ‘r’ undeclared (first use in this function) _mysql.c:2069: warning: implicit declaration of function ‘mysql_row_tell’ _mysql.c:2069: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:2070: warning: implicit declaration of function ‘mysql_row_seek’ _mysql.c:2070: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c: In function ‘_mysql_ResultObject_row_tell’: _mysql.c:2082: error: ‘MYSQL_ROW_OFFSET’ undeclared (first use in this function) _mysql.c:2082: error: expected ‘;’ before ‘r’ _mysql.c:2084: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:2085: error: ‘_mysql_ResultObject’ has no member named ‘use’ _mysql.c:2090: error: ‘r’ undeclared (first use in this function) _mysql.c:2090: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:2091: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c: In function ‘_mysql_ResultObject_dealloc’: _mysql.c:2099: warning: implicit declaration of function ‘mysql_free_result’ _mysql.c:2099: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c: At top level: _mysql.c:2330: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:2337: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:2344: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:2351: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:2358: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:2421: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:2421: error: initializer element is not constant _mysql.c:2421: error: (near initialization for ‘_mysql_ResultObject_memberlist[0].offset’) _mysql.c: In function ‘_mysql_ConnectionObject_getattr’: _mysql.c:2443: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:36:23: error: my_config.h: No such file or directory _mysql.c:38:19: error: mysql.h: No such file or directory _mysql.c:39:26: error: mysqld_error.h: No such file or directory _mysql.c:40:20: error: errmsg.h: No such file or directory _mysql.c:76: error: expected specifier-qualifier-list before ‘MYSQL’ _mysql.c:90: error: expected specifier-qualifier-list before ‘MYSQL_RES’ _mysql.c: In function ‘_mysql_Exception’: _mysql.c:120: warning: implicit declaration of function ‘mysql_errno’ _mysql.c:120: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:123: error: ‘CR_MAX_ERROR’ undeclared (first use in this function) _mysql.c:123: error: (Each undeclared identifier is reported only once _mysql.c:123: error: for each function it appears in.) _mysql.c:131: error: ‘CR_COMMANDS_OUT_OF_SYNC’ undeclared (first use in this function) _mysql.c:132: error: ‘ER_DB_CREATE_EXISTS’ undeclared (first use in this function) _mysql.c:133: error: ‘ER_SYNTAX_ERROR’ undeclared (first use in this function) _mysql.c:134: error: ‘ER_PARSE_ERROR’ undeclared (first use in this function) _mysql.c:135: error: ‘ER_NO_SUCH_TABLE’ undeclared (first use in this function) _mysql.c:136: error: ‘ER_WRONG_DB_NAME’ undeclared (first use in this function) _mysql.c:137: error: ‘ER_WRONG_TABLE_NAME’ undeclared (first use in this function) _mysql.c:138: error: ‘ER_FIELD_SPECIFIED_TWICE’ undeclared (first use in this function) _mysql.c:139: error: ‘ER_INVALID_GROUP_FUNC_USE’ undeclared (first use in this function) _mysql.c:140: error: ‘ER_UNSUPPORTED_EXTENSION’ undeclared (first use in this function) _mysql.c:141: error: ‘ER_TABLE_MUST_HAVE_COLUMNS’ undeclared (first use in this function) _mysql.c:170: error: ‘ER_DUP_ENTRY’ undeclared (first use in this function) _mysql.c:213: warning: implicit declaration of function ‘mysql_error’ _mysql.c:213: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:213: warning: passing argument 1 of ‘PyString_FromString’ makes pointer from integer without a cast _mysql.c: In function ‘_mysql_server_init’: _mysql.c:308: warning: label ‘finish’ defined but not used _mysql.c:234: warning: unused variable ‘item’ _mysql.c:233: warning: unused variable ‘groupc’ _mysql.c:233: warning: unused variable ‘i’ _mysql.c:233: warning: unused variable ‘cmd_argc’ _mysql.c:232: warning: unused variable ‘s’ _mysql.c: In function ‘_mysql_ResultObject_Initialize’: _mysql.c:363: error: ‘MYSQL_RES’ undeclared (first use in this function) _mysql.c:363: error: ‘result’ undeclared (first use in this function) _mysql.c:368: error: ‘MYSQL_FIELD’ undeclared (first use in this function) _mysql.c:368: error: ‘fields’ undeclared (first use in this function) _mysql.c:377: error: ‘_mysql_ResultObject’ has no member named ‘use’ _mysql.c:380: warning: implicit declaration of function ‘mysql_use_result’ _mysql.c:380: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:382: warning: implicit declaration of function ‘mysql_store_result’ _mysql.c:382: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:383: error: ‘_mysql_ResultObject’ has no member named ‘result’ _mysql.c:386: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:389: warning: implicit declaration of function ‘mysql_num_fields’ _mysql.c:390: error: ‘_mysql_ResultObject’ has no member named ‘nfields’ _mysql.c:391: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:392: warning: implicit declaration of function ‘mysql_fetch_fields’ _mysql.c:438: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c: In function ‘_mysql_ResultObject_traverse’: _mysql.c:450: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:451: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c: In function ‘_mysql_ResultObject_clear’: _mysql.c:462: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:462: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:462: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:462: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c:463: error: ‘_mysql_ResultObject’ has no member named ‘converter’ _mysql.c: In function ‘_mysql_ConnectionObject_Initialize’: _mysql.c:475: error: ‘MYSQL’ undeclared (first use in this function) _mysql.c:475: error: ‘conn’ undeclared (first use in this function) _mysql.c:500: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:501: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c:525: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:547: warning: implicit declaration of function ‘mysql_init’ _mysql.c:547: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:550: warning: implicit declaration of function ‘mysql_options’ _mysql.c:550: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:550: error: ‘MYSQL_OPT_CONNECT_TIMEOUT’ undeclared (first use in this function) _mysql.c:554: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:554: error: ‘MYSQL_OPT_COMPRESS’ undeclared (first use in this function) _mysql.c:555: error: ‘CLIENT_COMPRESS’ undeclared (first use in this function) _mysql.c:558: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:558: error: ‘MYSQL_OPT_NAMED_PIPE’ undeclared (first use in this function) _mysql.c:560: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:560: error: ‘MYSQL_INIT_COMMAND’ undeclared (first use in this function) _mysql.c:562: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:562: error: ‘MYSQL_READ_DEFAULT_FILE’ undeclared (first use in this function) _mysql.c:564: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:564: error: ‘MYSQL_READ_DEFAULT_GROUP’ undeclared (first use in this function) _mysql.c:567: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:567: error: ‘MYSQL_OPT_LOCAL_INFILE’ undeclared (first use in this function) _mysql.c:575: warning: implicit declaration of function ‘mysql_real_connect’ _mysql.c:575: error: ‘_mysql_ConnectionObject’ has no member named ‘connection’ _mysql.c:590: error: ‘_mysql_ConnectionObject’ has no member named ‘open’ _mysql.c: In function ‘_mysql_ConnectionObject_traverse’: _mysql.c:671: error: ‘_mysql_ConnectionObject’ has no member named ‘converter’ _mysql.c:

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• function objects versus function pointers

  - by kumar_m_kiran

  Hi All, I have two questions related to function objects and function pointers, Question : 1 When I read the different uses sort algorithm of STL, I see that the third parameter can be a function objects, below is an example class State { public: //... int population() const; float aveTempF() const; //... }; struct PopLess : public std::binary_function<State,State,bool> { bool operator ()( const State &a, const State &b ) const { return popLess( a, b ); } }; sort( union, union+50, PopLess() ); Question : Now, How does the statement, sort(union, union+50,PopLess()) work? PopLess() must be resolved into something like PopLess tempObject.operator() which would be same as executing the operator () function on a temporary object. I see this as, passing the return value of overloaded operation i.e bool (as in my example) to sort algorithm. So then, How does sort function resolve the third parameter in this case? Question : 2 Question Do we derive any particular advantage of using function objects versus function pointer? If we use below function pointer will it derive any disavantage? inline bool popLess( const State &a, const State &b ) { return a.population() < b.population(); } std::sort( union, union+50, popLess ); // sort by population PS : Both the above references(including example) are from book "C++ Common Knowledge: Essential Intermediate Programming" by "Stephen C. Dewhurst". I was unable to decode the topic content, thus have posted for help. Thanks in advance for your help.

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• Compiling a program with a legacy version of gcc

  - by wyatt

  This is probably a very difficult problem to troubleshoot with the information I can practically provide, but I'm hoping someone might be able to at least point me in a possible direction. I'm trying to install HTK (http://htk.eng.cam.ac.uk/), which, according to this page needs to be installed using gcc 3.4. Their method of implementing backwards compatibility: #yum install compat-gcc-34-c++ compat-gcc-34 won't work for me as I'm running Ubuntu (On that note, I take it I can't simply install YUM and the subsequent package, since it's an entirely different distro, but if I'm wrong I'd love to hear it). I instead installed two versions of gcc 3.4 - 3.4.0 and 3.4.6 using instructions from this site. I then added the lines suggested by that page to the top of the makefile (on this note, what's the difference between makefile and makefile.in? I tried adding the lines to the top of both files regardless), both for version 3.4.0 and 3.4.6, but both failed. I also tried, on the off-chance, compiling it with my current version (4.4.1), but that also failed. I got the errors: (cd HTKLib && make HTKLib.a) \ || case "" in k) fail=yes;; ) exit 1;; esac; make1: Entering directory /home/charles/bin/htk-3.4/HTKLib' gcc -ansi -D_SVID_SOURCE -DOSS_AUDIO -D'ARCH="i686"' -Wall -Wno-switch -g -O2 -I. -c -o HGraf.o HGraf.c HGraf.c:73:77: error: X11/Xlib.h: No such file or directory HGraf.c:74:23: error: X11/Xutil.h: No such file or directory HGraf.c:75:21: error: X11/Xos.h: No such file or directory HGraf.c:77:27: error: X11/keysymdef.h: No such file or directory HGraf.c:87: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token HGraf.c:88: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘rootW’ HGraf.c:91: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘theCmap’ HGraf.c:92: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘theGC’ HGraf.c:93: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘gcs’ HGraf.c:95: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token HGraf.c:96: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘report’ HGraf.c:97: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘hints’ HGraf.c:111: error: ‘GXcopy’ undeclared here (not in a function) HGraf.c:111: error: ‘GXor’ undeclared here (not in a function) HGraf.c:111: error: ‘GXxor’ undeclared here (not in a function) HGraf.c:111: error: ‘GXinvert’ undeclared here (not in a function) HGraf.c:151: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token HGraf.c: In function ‘InstallFonts’: HGraf.c:164: error: ‘FontInfo’ undeclared (first use in this function) HGraf.c:164: error: (Each undeclared identifier is reported only once HGraf.c:164: error: for each function it appears in.) HGraf.c:164: warning: implicit declaration of function ‘XLoadQueryFont’ HGraf.c:164: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:167: error: ‘DefaultFont’ undeclared (first use in this function) HGraf.c: At top level: HGraf.c:176: error: expected ‘)’ before ‘*’ token HGraf.c: In function ‘HGetEvent’: HGraf.c:219: error: ‘XEvent’ undeclared (first use in this function) HGraf.c:219: error: expected ‘;’ before ‘xev’ HGraf.c:223: warning: implicit declaration of function ‘XFlush’ HGraf.c:223: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:225: warning: implicit declaration of function ‘XEventsQueued’ HGraf.c:225: error: ‘QueuedAfterFlush’ undeclared (first use in this function) HGraf.c:226: warning: implicit declaration of function ‘XNextEvent’ HGraf.c:226: error: ‘xev’ undeclared (first use in this function) HGraf.c:228: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:230: error: ‘ButtonPress’ undeclared (first use in this function) HGraf.c:235: error: ‘ButtonRelease’ undeclared (first use in this function) HGraf.c:240: error: ‘MotionNotify’ undeclared (first use in this function) HGraf.c:245: error: ‘KeyPress’ undeclared (first use in this function) HGraf.c:249: warning: implicit declaration of function ‘DecodeKeyPress’ HGraf.c:251: error: ‘KeyRelease’ undeclared (first use in this function) HGraf.c:257: error: ‘Expose’ undeclared (first use in this function) HGraf.c: In function ‘HEventsPending’: HGraf.c:281: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:281: error: ‘QueuedAfterFlush’ undeclared (first use in this function) HGraf.c: In function ‘HMousePos’: HGraf.c:288: error: ‘Window’ undeclared (first use in this function) HGraf.c:288: error: expected ‘;’ before ‘root’ HGraf.c:293: warning: implicit declaration of function ‘XQueryPointer’ HGraf.c:293: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:293: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:293: error: ‘root’ undeclared (first use in this function) HGraf.c:293: error: ‘child’ undeclared (first use in this function) HGraf.c: In function ‘InstallColours’: HGraf.c:311: error: ‘XColor’ undeclared (first use in this function) HGraf.c:311: error: expected ‘;’ before ‘greyDef’ HGraf.c:317: warning: implicit declaration of function ‘XParseColor’ HGraf.c:317: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:317: error: ‘theCmap’ undeclared (first use in this function) HGraf.c:317: error: ‘colourDef’ undeclared (first use in this function) HGraf.c:320: warning: implicit declaration of function ‘XAllocColor’ HGraf.c:334: error: ‘whiteDef’ undeclared (first use in this function) HGraf.c:334: warning: implicit declaration of function ‘XQueryColor’ HGraf.c:335: error: ‘blackDef’ undeclared (first use in this function) HGraf.c:341: error: ‘greyDef’ undeclared (first use in this function) HGraf.c: In function ‘HSetColour’: HGraf.c:361: warning: implicit declaration of function ‘XSetForeground’ HGraf.c:361: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:361: error: ‘gcs’ undeclared (first use in this function) HGraf.c: In function ‘HSetGrey’: HGraf.c:370: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:370: error: ‘gcs’ undeclared (first use in this function) HGraf.c: In function ‘HDrawLines’: HGraf.c:388: warning: implicit declaration of function ‘XDrawLines’ HGraf.c:388: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:388: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:388: error: ‘theGC’ undeclared (first use in this function) HGraf.c:388: error: ‘XPoint’ undeclared (first use in this function) HGraf.c:388: error: expected expression before ‘)’ token HGraf.c: In function ‘HDrawRectangle’: HGraf.c:395: warning: implicit declaration of function ‘XDrawRectangle’ HGraf.c:395: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:395: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:395: error: ‘theGC’ undeclared (first use in this function) HGraf.c: In function ‘HFillRectangle’: HGraf.c:402: warning: implicit declaration of function ‘XFillRectangle’ HGraf.c:402: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:402: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:402: error: ‘theGC’ undeclared (first use in this function) HGraf.c: In function ‘HDrawLine’: HGraf.c:408: warning: implicit declaration of function ‘XDrawLine’ HGraf.c:408: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:408: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:408: error: ‘theGC’ undeclared (first use in this function) HGraf.c: In function ‘HFillPolygon’: HGraf.c:414: warning: implicit declaration of function ‘XFillPolygon’ HGraf.c:414: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:414: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:414: error: ‘theGC’ undeclared (first use in this function) HGraf.c:414: error: ‘XPoint’ undeclared (first use in this function) HGraf.c:414: error: expected expression before ‘)’ token HGraf.c: In function ‘HDrawArc’: HGraf.c:427: warning: implicit declaration of function ‘XDrawArc’ HGraf.c:427: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:427: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:427: error: ‘theGC’ undeclared (first use in this function) HGraf.c: In function ‘HFillArc’: HGraf.c:440: warning: implicit declaration of function ‘XFillArc’ HGraf.c:440: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:440: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:440: error: ‘theGC’ undeclared (first use in this function) HGraf.c: In function ‘HPrintf’: HGraf.c:451: warning: implicit declaration of function ‘XDrawString’ HGraf.c:451: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:451: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:451: error: ‘theGC’ undeclared (first use in this function) HGraf.c: In function ‘HCopyArea’: HGraf.c:457: warning: implicit declaration of function ‘XCopyArea’ HGraf.c:457: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:457: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:457: error: ‘theGC’ undeclared (first use in this function) HGraf.c: In function ‘HPlotVector’: HGraf.c:476: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:476: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:476: error: ‘theGC’ undeclared (first use in this function) HGraf.c: In function ‘HSetFontSize’: HGraf.c:490: error: ‘CurrentFont’ undeclared (first use in this function) HGraf.c:490: error: ‘DefaultFont’ undeclared (first use in this function) HGraf.c:499: error: ‘FontInfo’ undeclared (first use in this function) HGraf.c:502: warning: implicit declaration of function ‘XSetFont’ HGraf.c:502: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:502: error: ‘gcs’ undeclared (first use in this function) HGraf.c: In function ‘HSetLineWidth’: HGraf.c:511: warning: implicit declaration of function ‘XSetLineAttributes’ HGraf.c:511: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:511: error: ‘gcs’ undeclared (first use in this function) HGraf.c:511: error: ‘LineSolid’ undeclared (first use in this function) HGraf.c:511: error: ‘JoinRound’ undeclared (first use in this function) HGraf.c:511: error: ‘FillSolid’ undeclared (first use in this function) HGraf.c: In function ‘HSetXMode’: HGraf.c:517: error: ‘theGC’ undeclared (first use in this function) HGraf.c:517: error: ‘gcs’ undeclared (first use in this function) HGraf.c: In function ‘CentreX’: HGraf.c:523: warning: implicit declaration of function ‘XTextWidth’ HGraf.c:523: error: ‘CurrentFont’ undeclared (first use in this function) HGraf.c: In function ‘CentreY’: HGraf.c:529: error: ‘CurrentFont’ undeclared (first use in this function) HGraf.c: In function ‘HTextWidth’: HGraf.c:535: error: ‘CurrentFont’ undeclared (first use in this function) HGraf.c: In function ‘HTextHeight’: HGraf.c:541: error: ‘CurrentFont’ undeclared (first use in this function) HGraf.c: In function ‘HDrawImage’: HGraf.c:550: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token HGraf.c:550: error: ‘xi’ undeclared (first use in this function) HGraf.c:557: warning: implicit declaration of function ‘XDestroyImage’ HGraf.c:558: warning: implicit declaration of function ‘XGetImage’ HGraf.c:558: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:558: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:558: error: ‘AllPlanes’ undeclared (first use in this function) HGraf.c:558: error: ‘XYPixmap’ undeclared (first use in this function) HGraf.c:562: warning: implicit declaration of function ‘XPutPixel’ HGraf.c:564: warning: implicit declaration of function ‘XPutImage’ HGraf.c:564: error: ‘theGC’ undeclared (first use in this function) HGraf.c: In function ‘HFlush’: HGraf.c:570: error: ‘theDisp’ undeclared (first use in this function) HGraf.c: In function ‘InitGCs’: HGraf.c:780: error: ‘XGCValues’ undeclared (first use in this function) HGraf.c:780: error: expected ‘;’ before ‘values’ HGraf.c:783: error: ‘GCLineWidth’ undeclared (first use in this function) HGraf.c:783: error: ‘GCFunction’ undeclared (first use in this function) HGraf.c:783: error: ‘GCForeground’ undeclared (first use in this function) HGraf.c:785: error: ‘values’ undeclared (first use in this function) HGraf.c:788: error: ‘gcs’ undeclared (first use in this function) HGraf.c:788: warning: implicit declaration of function ‘XCreateGC’ HGraf.c:788: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:788: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:790: error: ‘GCPlaneMask’ undeclared (first use in this function) HGraf.c: In function ‘InitGlobals’: HGraf.c:800: warning: implicit declaration of function ‘DefaultScreen’ HGraf.c:800: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:801: error: ‘theCmap’ undeclared (first use in this function) HGraf.c:801: warning: implicit declaration of function ‘DefaultColormap’ HGraf.c:802: error: ‘rootW’ undeclared (first use in this function) HGraf.c:802: warning: implicit declaration of function ‘RootWindow’ HGraf.c:803: error: ‘theGC’ undeclared (first use in this function) HGraf.c:803: warning: implicit declaration of function ‘DefaultGC’ HGraf.c:804: error: ‘theVisual’ undeclared (first use in this function) HGraf.c:804: warning: implicit declaration of function ‘DefaultVisual’ HGraf.c:805: warning: implicit declaration of function ‘DisplayCells’ HGraf.c:806: warning: implicit declaration of function ‘DisplayWidth’ HGraf.c:807: warning: implicit declaration of function ‘DisplayHeight’ HGraf.c:808: warning: implicit declaration of function ‘DisplayPlanes’ HGraf.c:809: warning: implicit declaration of function ‘WhitePixel’ HGraf.c:810: warning: implicit declaration of function ‘BlackPixel’ HGraf.c: In function ‘MakeXGraf’: HGraf.c:817: error: ‘Window’ undeclared (first use in this function) HGraf.c:817: error: expected ‘;’ before ‘window’ HGraf.c:818: error: ‘XSetWindowAttributes’ undeclared (first use in this function) HGraf.c:818: error: expected ‘;’ before ‘setwinattr’ HGraf.c:823: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:823: warning: implicit declaration of function ‘XOpenDisplay’ HGraf.c:824: warning: implicit declaration of function ‘XDisplayName’ HGraf.c:828: error: ‘parent’ undeclared (first use in this function) HGraf.c:829: error: ‘window’ undeclared (first use in this function) HGraf.c:829: warning: implicit declaration of function ‘XCreateSimpleWindow’ HGraf.c:831: error: ‘CWBackingStore’ undeclared (first use in this function) HGraf.c:831: error: ‘setwinattr’ undeclared (first use in this function) HGraf.c:831: error: ‘WhenMapped’ undeclared (first use in this function) HGraf.c:832: warning: implicit declaration of function ‘XChangeWindowAttributes’ HGraf.c:834: error: ‘hints’ undeclared (first use in this function) HGraf.c:834: error: ‘PPosition’ undeclared (first use in this function) HGraf.c:834: error: ‘PSize’ undeclared (first use in this function) HGraf.c:834: error: ‘PMaxSize’ undeclared (first use in this function) HGraf.c:834: error: ‘PMinSize’ undeclared (first use in this function) HGraf.c:841: warning: implicit declaration of function ‘XSetStandardProperties’ HGraf.c:841: error: ‘None’ undeclared (first use in this function) HGraf.c:843: warning: implicit declaration of function ‘XSelectInput’ HGraf.c:843: error: ‘ExposureMask’ undeclared (first use in this function) HGraf.c:843: error: ‘KeyPressMask’ undeclared (first use in this function) HGraf.c:843: error: ‘ButtonPressMask’ undeclared (first use in this function) HGraf.c:844: error: ‘ButtonReleaseMask’ undeclared (first use in this function) HGraf.c:844: error: ‘PointerMotionHintMask’ undeclared (first use in this function) HGraf.c:844: error: ‘PointerMotionMask’ undeclared (first use in this function) HGraf.c:845: warning: implicit declaration of function ‘XMapWindow’ HGraf.c:845: error: ‘theWindow’ undeclared (first use in this function) HGraf.c:850: error: ‘report’ undeclared (first use in this function) HGraf.c:851: error: ‘Expose’ undeclared (first use in this function) HGraf.c:852: warning: implicit declaration of function ‘XSendEvent’ HGraf.c:852: error: ‘False’ undeclared (first use in this function) HGraf.c: In function ‘TermHGraf’: HGraf.c:861: error: ‘theDisp’ undeclared (first use in this function) HGraf.c:862: warning: implicit declaration of function ‘XCloseDisplay’ make[1]: *** [HGraf.o] Error 1 make[1]: Leaving directory/home/charles/bin/htk-3.4/HTKLib' make: ** [HTKLib/HTKLib.a] Error 1 Thank you for any help you can provide.

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• When is a SQL function not a function?

  - by Rob Farley

  Should SQL Server even have functions? (Oh yeah – this is a T-SQL Tuesday post, hosted this month by Brad Schulz) Functions serve an important part of programming, in almost any language. A function is a piece of code that is designed to return something, as opposed to a piece of code which isn’t designed to return anything (which is known as a procedure). SQL Server is no different. You can call stored procedures, even from within other stored procedures, and you can call functions and use these in other queries. Stored procedures might query something, and therefore ‘return data’, but a function in SQL is considered to have the type of the thing returned, and can be used accordingly in queries. Consider the internal GETDATE() function. SELECT GETDATE(), SomeDatetimeColumn FROM dbo.SomeTable; There’s no logical difference between the field that is being returned by the function and the field that’s being returned by the table column. Both are the datetime field – if you didn’t have inside knowledge, you wouldn’t necessarily be able to tell which was which. And so as developers, we find ourselves wanting to create functions that return all kinds of things – functions which look up values based on codes, functions which do string manipulation, and so on. But it’s rubbish. Ok, it’s not all rubbish, but it mostly is. And this isn’t even considering the SARGability impact. It’s far more significant than that. (When I say the SARGability aspect, I mean “because you’re unlikely to have an index on the result of some function that’s applied to a column, so try to invert the function and query the column in an unchanged manner”) I’m going to consider the three main types of user-defined functions in SQL Server: Scalar Inline Table-Valued Multi-statement Table-Valued I could also look at user-defined CLR functions, including aggregate functions, but not today. I figure that most people don’t tend to get around to doing CLR functions, and I’m going to focus on the T-SQL-based user-defined functions. Most people split these types of function up into two types. So do I. Except that most people pick them based on ‘scalar or table-valued’. I’d rather go with ‘inline or not’. If it’s not inline, it’s rubbish. It really is. Let’s start by considering the two kinds of table-valued function, and compare them. These functions are going to return the sales for a particular salesperson in a particular year, from the AdventureWorks database. CREATE FUNCTION dbo.FetchSales_inline(@salespersonid int, @orderyear int) RETURNS TABLE AS  RETURN (     SELECT e.LoginID as EmployeeLogin, o.OrderDate, o.SalesOrderID     FROM Sales.SalesOrderHeader AS o     LEFT JOIN HumanResources.Employee AS e     ON e.EmployeeID = o.SalesPersonID     WHERE o.SalesPersonID = @salespersonid     AND o.OrderDate >= DATEADD(year,@orderyear-2000,'20000101')     AND o.OrderDate < DATEADD(year,@orderyear-2000+1,'20000101') ) ; GO CREATE FUNCTION dbo.FetchSales_multi(@salespersonid int, @orderyear int) RETURNS @results TABLE (     EmployeeLogin nvarchar(512),     OrderDate datetime,     SalesOrderID int     ) AS BEGIN     INSERT @results (EmployeeLogin, OrderDate, SalesOrderID)     SELECT e.LoginID, o.OrderDate, o.SalesOrderID     FROM Sales.SalesOrderHeader AS o     LEFT JOIN HumanResources.Employee AS e     ON e.EmployeeID = o.SalesPersonID     WHERE o.SalesPersonID = @salespersonid     AND o.OrderDate >= DATEADD(year,@orderyear-2000,'20000101')     AND o.OrderDate < DATEADD(year,@orderyear-2000+1,'20000101')     ;     RETURN END ; GO You’ll notice that I’m being nice and responsible with the use of the DATEADD function, so that I have SARGability on the OrderDate filter. Regular readers will be hoping I’ll show what’s going on in the execution plans here. Here I’ve run two SELECT * queries with the “Show Actual Execution Plan” option turned on. Notice that the ‘Query cost’ of the multi-statement version is just 2% of the ‘Batch cost’. But also notice there’s trickery going on. And it’s nothing to do with that extra index that I have on the OrderDate column. Trickery. Look at it – clearly, the first plan is showing us what’s going on inside the function, but the second one isn’t. The second one is blindly running the function, and then scanning the results. There’s a Sequence operator which is calling the TVF operator, and then calling a Table Scan to get the results of that function for the SELECT operator. But surely it still has to do all the work that the first one is doing... To see what’s actually going on, let’s look at the Estimated plan. Now, we see the same plans (almost) that we saw in the Actuals, but we have an extra one – the one that was used for the TVF. Here’s where we see the inner workings of it. You’ll probably recognise the right-hand side of the TVF’s plan as looking very similar to the first plan – but it’s now being called by a stack of other operators, including an INSERT statement to be able to populate the table variable that the multi-statement TVF requires. And the cost of the TVF is 57% of the batch! But it gets worse. Let’s consider what happens if we don’t need all the columns. We’ll leave out the EmployeeLogin column. Here, we see that the inline function call has been simplified down. It doesn’t need the Employee table. The join is redundant and has been eliminated from the plan, making it even cheaper. But the multi-statement plan runs the whole thing as before, only removing the extra column when the Table Scan is performed. A multi-statement function is a lot more powerful than an inline one. An inline function can only be the result of a single sub-query. It’s essentially the same as a parameterised view, because views demonstrate this same behaviour of extracting the definition of the view and using it in the outer query. A multi-statement function is clearly more powerful because it can contain far more complex logic. But a multi-statement function isn’t really a function at all. It’s a stored procedure. It’s wrapped up like a function, but behaves like a stored procedure. It would be completely unreasonable to expect that a stored procedure could be simplified down to recognise that not all the columns might be needed, but yet this is part of the pain associated with this procedural function situation. The biggest clue that a multi-statement function is more like a stored procedure than a function is the “BEGIN” and “END” statements that surround the code. If you try to create a multi-statement function without these statements, you’ll get an error – they are very much required. When I used to present on this kind of thing, I even used to call it “The Dangers of BEGIN and END”, and yes, I’ve written about this type of thing before in a similarly-named post over at my old blog. Now how about scalar functions... Suppose we wanted a scalar function to return the count of these. CREATE FUNCTION dbo.FetchSales_scalar(@salespersonid int, @orderyear int) RETURNS int AS BEGIN     RETURN (         SELECT COUNT(*)         FROM Sales.SalesOrderHeader AS o         LEFT JOIN HumanResources.Employee AS e         ON e.EmployeeID = o.SalesPersonID         WHERE o.SalesPersonID = @salespersonid         AND o.OrderDate >= DATEADD(year,@orderyear-2000,'20000101')         AND o.OrderDate < DATEADD(year,@orderyear-2000+1,'20000101')     ); END ; GO Notice the evil words? They’re required. Try to remove them, you just get an error. That’s right – any scalar function is procedural, despite the fact that you wrap up a sub-query inside that RETURN statement. It’s as ugly as anything. Hopefully this will change in future versions. Let’s have a look at how this is reflected in an execution plan. Here’s a query, its Actual plan, and its Estimated plan: SELECT e.LoginID, y.year, dbo.FetchSales_scalar(p.SalesPersonID, y.year) AS NumSales FROM (VALUES (2001),(2002),(2003),(2004)) AS y (year) CROSS JOIN Sales.SalesPerson AS p LEFT JOIN HumanResources.Employee AS e ON e.EmployeeID = p.SalesPersonID; We see here that the cost of the scalar function is about twice that of the outer query. Nicely, the query optimizer has worked out that it doesn’t need the Employee table, but that’s a bit of a red herring here. There’s actually something way more significant going on. If I look at the properties of that UDF operator, it tells me that the Estimated Subtree Cost is 0.337999. If I just run the query SELECT dbo.FetchSales_scalar(281,2003); we see that the UDF cost is still unchanged. You see, this 0.0337999 is the cost of running the scalar function ONCE. But when we ran that query with the CROSS JOIN in it, we returned quite a few rows. 68 in fact. Could’ve been a lot more, if we’d had more salespeople or more years. And so we come to the biggest problem. This procedure (I don’t want to call it a function) is getting called 68 times – each one between twice as expensive as the outer query. And because it’s calling it in a separate context, there is even more overhead that I haven’t considered here. The cheek of it, to say that the Compute Scalar operator here costs 0%! I know a number of IT projects that could’ve used that kind of costing method, but that’s another story that I’m not going to go into here. Let’s look at a better way. Suppose our scalar function had been implemented as an inline one. Then it could have been expanded out like a sub-query. It could’ve run something like this: SELECT e.LoginID, y.year, (SELECT COUNT(*)     FROM Sales.SalesOrderHeader AS o     LEFT JOIN HumanResources.Employee AS e     ON e.EmployeeID = o.SalesPersonID     WHERE o.SalesPersonID = p.SalesPersonID     AND o.OrderDate >= DATEADD(year,y.year-2000,'20000101')     AND o.OrderDate < DATEADD(year,y.year-2000+1,'20000101')     ) AS NumSales FROM (VALUES (2001),(2002),(2003),(2004)) AS y (year) CROSS JOIN Sales.SalesPerson AS p LEFT JOIN HumanResources.Employee AS e ON e.EmployeeID = p.SalesPersonID; Don’t worry too much about the Scan of the SalesOrderHeader underneath a Nested Loop. If you remember from plenty of other posts on the matter, execution plans don’t push the data through. That Scan only runs once. The Index Spool sucks the data out of it and populates a structure that is used to feed the Stream Aggregate. The Index Spool operator gets called 68 times, but the Scan only once (the Number of Executions property demonstrates this). Here, the Query Optimizer has a full picture of what’s being asked, and can make the appropriate decision about how it accesses the data. It can simplify it down properly. To get this kind of behaviour from a function, we need it to be inline. But without inline scalar functions, we need to make our function be table-valued. Luckily, that’s ok. CREATE FUNCTION dbo.FetchSales_inline2(@salespersonid int, @orderyear int) RETURNS table AS RETURN (SELECT COUNT(*) as NumSales     FROM Sales.SalesOrderHeader AS o     LEFT JOIN HumanResources.Employee AS e     ON e.EmployeeID = o.SalesPersonID     WHERE o.SalesPersonID = @salespersonid     AND o.OrderDate >= DATEADD(year,@orderyear-2000,'20000101')     AND o.OrderDate < DATEADD(year,@orderyear-2000+1,'20000101') ); GO But we can’t use this as a scalar. Instead, we need to use it with the APPLY operator. SELECT e.LoginID, y.year, n.NumSales FROM (VALUES (2001),(2002),(2003),(2004)) AS y (year) CROSS JOIN Sales.SalesPerson AS p LEFT JOIN HumanResources.Employee AS e ON e.EmployeeID = p.SalesPersonID OUTER APPLY dbo.FetchSales_inline2(p.SalesPersonID, y.year) AS n; And now, we get the plan that we want for this query. All we’ve done is tell the function that it’s returning a table instead of a single value, and removed the BEGIN and END statements. We’ve had to name the column being returned, but what we’ve gained is an actual inline simplifiable function. And if we wanted it to return multiple columns, it could do that too. I really consider this function to be superior to the scalar function in every way. It does need to be handled differently in the outer query, but in many ways it’s a more elegant method there too. The function calls can be put amongst the FROM clause, where they can then be used in the WHERE or GROUP BY clauses without fear of calling the function multiple times (another horrible side effect of functions). So please. If you see BEGIN and END in a function, remember it’s not really a function, it’s a procedure. And then fix it. @rob_farley

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• PHP: Echo function output in function-line, not line of function call

  - by Brill

  I have a problem with my self-coded template system. The content is inserted by Include(). Now I need to add a meta redirect to one page. I know, meta redirect is not the safest way, but I need it because of it's delay possibility. Now i'm looking for a way to influence the wrapping page (template) by the wrapped page (content). So I thought a function can do this job. <?php function test($testvar){ echo $testvar;} ?> <hr /> <?php test("testtext"); ?> Of course the text echos in the line of the function call, not in the function line. Is there a way to make the function echo in the line of the function itself? In this case above the horizontal rule, not below? Of course every other best pratice for this "template problem" ist welcome! THX

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• MYSQL stored function - create function (function definition) problem using FORMAT

  - by Jason Fonseca

  Hi all, I keep receiving an error with the following code. I am trying to make a function that will format a field (content=0.0032) into a varchar/percent (content=0.32%). At the moment i'm just trying to get format to work, and it throws up an error "Error Code : 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'len);" The function definition for "Format" is "Format(X,d)" where x is the number and d is the number of decimal places to round too. It then should output a string ###,###,###.## etc. My code is as follows: DROP FUNCTION IF EXISTS percent; DELIMITER $$ CREATE /*[DEFINER = { user | CURRENT_USER }]*/ FUNCTION `auau7859_aba`.`percent`(num DOUBLE, len INT) RETURNS VARCHAR(10) DETERMINISTIC BEGIN RETURN FORMAT(num,len); END$$ DELIMITER ; Save me...Luke

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• Can overloading is possible with two version of function, constant member function and function with

  - by GG

  Hello, I just came across various overloading methods like type of parameter passed, varying number of parameters, return type etc. I just want to know that can I overload a function with following two version //function which can modify member String& MyClass::doSomething(); //constant member function String& MyClass::doSomething() const; Please let me know the reason behind it. Thanks, GG

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• Templated << friend not working when in interrelationship with other templated union types

  - by Dwight

  While working on my basic vector library, I've been trying to use a nice syntax for swizzle-based printing. The problem occurs when attempting to print a swizzle of a different dimension than the vector in question. In GCC 4.0, I originally had the friend << overloaded functions (with a body, even though it duplicated code) for every dimension in each vector, which caused the code to work, even if the non-native dimension code never actually was called. This failed in GCC 4.2. I recently realized (silly me) that only the function declaration was needed, not the body of the code, so I did that. Now I get the same warning on both GCC 4.0 and 4.2: LINE 50 warning: friend declaration 'std::ostream& operator<<(std::ostream&, const VECTOR3<TYPE>&)' declares a non-template function Plus the five identical warnings more for the other function declarations. The below example code shows off exactly what's going on and has all code necessary to reproduce the problem. #include <iostream> // cout, endl #include <sstream> // ostream, ostringstream, string using std::cout; using std::endl; using std::string; using std::ostream; // Predefines template <typename TYPE> union VECTOR2; template <typename TYPE> union VECTOR3; template <typename TYPE> union VECTOR4; typedef VECTOR2<float> vec2; typedef VECTOR3<float> vec3; typedef VECTOR4<float> vec4; template <typename TYPE> union VECTOR2 { private: struct { TYPE x, y; } v; struct s1 { protected: TYPE x, y; }; struct s2 { protected: TYPE x, y; }; struct s3 { protected: TYPE x, y; }; struct s4 { protected: TYPE x, y; }; struct X : s1 { operator TYPE() const { return s1::x; } }; struct XX : s2 { operator VECTOR2<TYPE>() const { return VECTOR2<TYPE>(s2::x, s2::x); } }; struct XXX : s3 { operator VECTOR3<TYPE>() const { return VECTOR3<TYPE>(s3::x, s3::x, s3::x); } }; struct XXXX : s4 { operator VECTOR4<TYPE>() const { return VECTOR4<TYPE>(s4::x, s4::x, s4::x, s4::x); } }; public: VECTOR2() {} VECTOR2(const TYPE& x, const TYPE& y) { v.x = x; v.y = y; } X x; XX xx; XXX xxx; XXXX xxxx; // Overload for cout friend ostream& operator<<(ostream& os, const VECTOR2<TYPE>& toString) { os << "(" << toString.v.x << ", " << toString.v.y << ")"; return os; } friend ostream& operator<<(ostream& os, const VECTOR3<TYPE>& toString); friend ostream& operator<<(ostream& os, const VECTOR4<TYPE>& toString); }; template <typename TYPE> union VECTOR3 { private: struct { TYPE x, y, z; } v; struct s1 { protected: TYPE x, y, z; }; struct s2 { protected: TYPE x, y, z; }; struct s3 { protected: TYPE x, y, z; }; struct s4 { protected: TYPE x, y, z; }; struct X : s1 { operator TYPE() const { return s1::x; } }; struct XX : s2 { operator VECTOR2<TYPE>() const { return VECTOR2<TYPE>(s2::x, s2::x); } }; struct XXX : s3 { operator VECTOR3<TYPE>() const { return VECTOR3<TYPE>(s3::x, s3::x, s3::x); } }; struct XXXX : s4 { operator VECTOR4<TYPE>() const { return VECTOR4<TYPE>(s4::x, s4::x, s4::x, s4::x); } }; public: VECTOR3() {} VECTOR3(const TYPE& x, const TYPE& y, const TYPE& z) { v.x = x; v.y = y; v.z = z; } X x; XX xx; XXX xxx; XXXX xxxx; // Overload for cout friend ostream& operator<<(ostream& os, const VECTOR3<TYPE>& toString) { os << "(" << toString.v.x << ", " << toString.v.y << ", " << toString.v.z << ")"; return os; } friend ostream& operator<<(ostream& os, const VECTOR2<TYPE>& toString); friend ostream& operator<<(ostream& os, const VECTOR4<TYPE>& toString); }; template <typename TYPE> union VECTOR4 { private: struct { TYPE x, y, z, w; } v; struct s1 { protected: TYPE x, y, z, w; }; struct s2 { protected: TYPE x, y, z, w; }; struct s3 { protected: TYPE x, y, z, w; }; struct s4 { protected: TYPE x, y, z, w; }; struct X : s1 { operator TYPE() const { return s1::x; } }; struct XX : s2 { operator VECTOR2<TYPE>() const { return VECTOR2<TYPE>(s2::x, s2::x); } }; struct XXX : s3 { operator VECTOR3<TYPE>() const { return VECTOR3<TYPE>(s3::x, s3::x, s3::x); } }; struct XXXX : s4 { operator VECTOR4<TYPE>() const { return VECTOR4<TYPE>(s4::x, s4::x, s4::x, s4::x); } }; public: VECTOR4() {} VECTOR4(const TYPE& x, const TYPE& y, const TYPE& z, const TYPE& w) { v.x = x; v.y = y; v.z = z; v.w = w; } X x; XX xx; XXX xxx; XXXX xxxx; // Overload for cout friend ostream& operator<<(ostream& os, const VECTOR4& toString) { os << "(" << toString.v.x << ", " << toString.v.y << ", " << toString.v.z << ", " << toString.v.w << ")"; return os; } friend ostream& operator<<(ostream& os, const VECTOR2<TYPE>& toString); friend ostream& operator<<(ostream& os, const VECTOR3<TYPE>& toString); }; // Test code int main (int argc, char * const argv[]) { vec2 my2dVector(1, 2); cout << my2dVector.x << endl; cout << my2dVector.xx << endl; cout << my2dVector.xxx << endl; cout << my2dVector.xxxx << endl; vec3 my3dVector(3, 4, 5); cout << my3dVector.x << endl; cout << my3dVector.xx << endl; cout << my3dVector.xxx << endl; cout << my3dVector.xxxx << endl; vec4 my4dVector(6, 7, 8, 9); cout << my4dVector.x << endl; cout << my4dVector.xx << endl; cout << my4dVector.xxx << endl; cout << my4dVector.xxxx << endl; return 0; } The code WORKS and produces the correct output, but I prefer warning free code whenever possible. I followed the advice the compiler gave me (summarized here and described by forums and StackOverflow as the answer to this warning) and added the two things that supposedly tells the compiler what's going on. That is, I added the function definitions as non-friends after the predefinitions of the templated unions: template <typename TYPE> ostream& operator<<(ostream& os, const VECTOR2<TYPE>& toString); template <typename TYPE> ostream& operator<<(ostream& os, const VECTOR3<TYPE>& toString); template <typename TYPE> ostream& operator<<(ostream& os, const VECTOR4<TYPE>& toString); And, to each friend function that causes the issue, I added the <> after the function name, such as for VECTOR2's case: friend ostream& operator<< <> (ostream& os, const VECTOR3<TYPE>& toString); friend ostream& operator<< <> (ostream& os, const VECTOR4<TYPE>& toString); However, doing so leads to errors, such as: LINE 139: error: no match for 'operator<<' in 'std::cout << my2dVector.VECTOR2<float>::xxx' What's going on? Is it something related to how these templated union class-like structures are interrelated, or is it due to the unions themselves? Update After rethinking the issues involved and listening to the various suggestions of Potatoswatter, I found the final solution. Unlike just about every single cout overload example on the internet, I don't need access to the private member information, but can use the public interface to do what I wish. So, I make a non-friend overload functions that are inline for the swizzle parts that call the real friend overload functions. This bypasses the issues the compiler has with templated friend functions. I've added to the latest version of my project. It now works on both versions of GCC I tried with no warnings. The code in question looks like this: template <typename SWIZZLE> inline typename EnableIf< Is2D< typename SWIZZLE::PARENT >, ostream >::type& operator<<(ostream& os, const SWIZZLE& printVector) { os << (typename SWIZZLE::PARENT(printVector)); return os; } template <typename SWIZZLE> inline typename EnableIf< Is3D< typename SWIZZLE::PARENT >, ostream >::type& operator<<(ostream& os, const SWIZZLE& printVector) { os << (typename SWIZZLE::PARENT(printVector)); return os; } template <typename SWIZZLE> inline typename EnableIf< Is4D< typename SWIZZLE::PARENT >, ostream >::type& operator<<(ostream& os, const SWIZZLE& printVector) { os << (typename SWIZZLE::PARENT(printVector)); return os; }

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• eventmachine on debian fails install via rubygems

  - by Max

  this has been killing me for the last 5 hours. I don't seem to be able to get eventmachine running on my debian box. here this output: $ gem install thin Building native extensions. This could take a while... ERROR: Error installing thin: ERROR: Failed to build gem native extension. /home/eventhub/.rvm/rubies/ruby-1.9.3-p125/bin/ruby extconf.rb checking for rb_trap_immediate in ruby.h,rubysig.h... no checking for rb_thread_blocking_region()... yes checking for inotify_init() in sys/inotify.h... yes checking for writev() in sys/uio.h... yes checking for rb_wait_for_single_fd()... yes checking for rb_enable_interrupt()... yes checking for rb_time_new()... yes checking for sys/event.h... no checking for epoll_create() in sys/epoll.h... yes creating Makefile make compiling kb.cpp cc1plus: warning: command line option "-Wdeclaration-after-statement" is valid for C/ObjC but not for C++ cc1plus: warning: command line option "-Wimplicit-function-declaration" is valid for C/ObjC but not for C++ In file included from project.h:149, from kb.cpp:20: binder.h:35: warning: type qualifiers ignored on function return type In file included from project.h:150, from kb.cpp:20: em.h:84: warning: type qualifiers ignored on function return type em.h:85: warning: type qualifiers ignored on function return type em.h:86: warning: type qualifiers ignored on function return type em.h:88: warning: type qualifiers ignored on function return type em.h:89: warning: type qualifiers ignored on function return type em.h:90: warning: type qualifiers ignored on function return type em.h:91: warning: type qualifiers ignored on function return type em.h:93: warning: type qualifiers ignored on function return type em.h:99: warning: type qualifiers ignored on function return type em.h:116: warning: type qualifiers ignored on function return type em.h:125: warning: type qualifiers ignored on function return type In file included from project.h:154, from kb.cpp:20: eventmachine.h:46: warning: type qualifiers ignored on function return type eventmachine.h:47: warning: type qualifiers ignored on function return type eventmachine.h:48: warning: type qualifiers ignored on function return type eventmachine.h:50: warning: type qualifiers ignored on function return type eventmachine.h:65: warning: type qualifiers ignored on function return type eventmachine.h:66: warning: type qualifiers ignored on function return type eventmachine.h:67: warning: type qualifiers ignored on function return type eventmachine.h:68: warning: type qualifiers ignored on function return type In file included from project.h:154, from kb.cpp:20: eventmachine.h:103: warning: type qualifiers ignored on function return type eventmachine.h:105: warning: type qualifiers ignored on function return type eventmachine.h:108: warning: type qualifiers ignored on function return type compiling rubymain.cpp cc1plus: warning: command line option "-Wdeclaration-after-statement" is valid for C/ObjC but not for C++ cc1plus: warning: command line option "-Wimplicit-function-declaration" is valid for C/ObjC but not for C++ In file included from project.h:149, from rubymain.cpp:20: binder.h:35: warning: type qualifiers ignored on function return type In file included from project.h:150, from rubymain.cpp:20: em.h:84: warning: type qualifiers ignored on function return type em.h:85: warning: type qualifiers ignored on function return type em.h:86: warning: type qualifiers ignored on function return type em.h:88: warning: type qualifiers ignored on function return type em.h:89: warning: type qualifiers ignored on function return type em.h:90: warning: type qualifiers ignored on function return type em.h:91: warning: type qualifiers ignored on function return type em.h:93: warning: type qualifiers ignored on function return type em.h:99: warning: type qualifiers ignored on function return type em.h:116: warning: type qualifiers ignored on function return type em.h:125: warning: type qualifiers ignored on function return type In file included from project.h:154, from rubymain.cpp:20: eventmachine.h:46: warning: type qualifiers ignored on function return type eventmachine.h:47: warning: type qualifiers ignored on function return type eventmachine.h:48: warning: type qualifiers ignored on function return type eventmachine.h:50: warning: type qualifiers ignored on function return type eventmachine.h:65: warning: type qualifiers ignored on function return type eventmachine.h:66: warning: type qualifiers ignored on function return type eventmachine.h:67: warning: type qualifiers ignored on function return type eventmachine.h:68: warning: type qualifiers ignored on function return type In file included from project.h:154, from rubymain.cpp:20: eventmachine.h:103: warning: type qualifiers ignored on function return type eventmachine.h:105: warning: type qualifiers ignored on function return type eventmachine.h:108: warning: type qualifiers ignored on function return type compiling ssl.cpp cc1plus: warning: command line option "-Wdeclaration-after-statement" is valid for C/ObjC but not for C++ cc1plus: warning: command line option "-Wimplicit-function-declaration" is valid for C/ObjC but not for C++ In file included from project.h:149, from ssl.cpp:23: binder.h:35: warning: type qualifiers ignored on function return type In file included from project.h:150, from ssl.cpp:23: em.h:84: warning: type qualifiers ignored on function return type em.h:85: warning: type qualifiers ignored on function return type em.h:86: warning: type qualifiers ignored on function return type em.h:88: warning: type qualifiers ignored on function return type em.h:89: warning: type qualifiers ignored on function return type em.h:90: warning: type qualifiers ignored on function return type em.h:91: warning: type qualifiers ignored on function return type em.h:93: warning: type qualifiers ignored on function return type em.h:99: warning: type qualifiers ignored on function return type em.h:116: warning: type qualifiers ignored on function return type em.h:125: warning: type qualifiers ignored on function return type In file included from project.h:154, from ssl.cpp:23: eventmachine.h:46: warning: type qualifiers ignored on function return type eventmachine.h:47: warning: type qualifiers ignored on function return type eventmachine.h:48: warning: type qualifiers ignored on function return type eventmachine.h:50: warning: type qualifiers ignored on function return type eventmachine.h:65: warning: type qualifiers ignored on function return type eventmachine.h:66: warning: type qualifiers ignored on function return type eventmachine.h:67: warning: type qualifiers ignored on function return type eventmachine.h:68: warning: type qualifiers ignored on function return type In file included from project.h:154, from ssl.cpp:23: eventmachine.h:103: warning: type qualifiers ignored on function return type eventmachine.h:105: warning: type qualifiers ignored on function return type eventmachine.h:108: warning: type qualifiers ignored on function return type compiling cmain.cpp cc1plus: warning: command line option "-Wdeclaration-after-statement" is valid for C/ObjC but not for C++ cc1plus: warning: command line option "-Wimplicit-function-declaration" is valid for C/ObjC but not for C++ In file included from project.h:149, from cmain.cpp:20: binder.h:35: warning: type qualifiers ignored on function return type In file included from project.h:150, from cmain.cpp:20: em.h:84: warning: type qualifiers ignored on function return type em.h:85: warning: type qualifiers ignored on function return type em.h:86: warning: type qualifiers ignored on function return type em.h:88: warning: type qualifiers ignored on function return type em.h:89: warning: type qualifiers ignored on function return type em.h:90: warning: type qualifiers ignored on function return type em.h:91: warning: type qualifiers ignored on function return type em.h:93: warning: type qualifiers ignored on function return type em.h:99: warning: type qualifiers ignored on function return type em.h:116: warning: type qualifiers ignored on function return type em.h:125: warning: type qualifiers ignored on function return type In file included from project.h:154, from cmain.cpp:20: eventmachine.h:46: warning: type qualifiers ignored on function return type eventmachine.h:47: warning: type qualifiers ignored on function return type eventmachine.h:48: warning: type qualifiers ignored on function return type eventmachine.h:50: warning: type qualifiers ignored on function return type eventmachine.h:65: warning: type qualifiers ignored on function return type eventmachine.h:66: warning: type qualifiers ignored on function return type eventmachine.h:67: warning: type qualifiers ignored on function return type eventmachine.h:68: warning: type qualifiers ignored on function return type In file included from project.h:154, from cmain.cpp:20: eventmachine.h:103: warning: type qualifiers ignored on function return type eventmachine.h:105: warning: type qualifiers ignored on function return type eventmachine.h:108: warning: type qualifiers ignored on function return type cmain.cpp:96: warning: type qualifiers ignored on function return type cmain.cpp:107: warning: type qualifiers ignored on function return type cmain.cpp:117: warning: type qualifiers ignored on function return type cmain.cpp:127: warning: type qualifiers ignored on function return type cmain.cpp:269: warning: type qualifiers ignored on function return type cmain.cpp:279: warning: type qualifiers ignored on function return type cmain.cpp:289: warning: type qualifiers ignored on function return type cmain.cpp:299: warning: type qualifiers ignored on function return type cmain.cpp:309: warning: type qualifiers ignored on function return type cmain.cpp:329: warning: type qualifiers ignored on function return type cmain.cpp:678: warning: type qualifiers ignored on function return type compiling em.cpp cc1plus: warning: command line option "-Wdeclaration-after-statement" is valid for C/ObjC but not for C++ cc1plus: warning: command line option "-Wimplicit-function-declaration" is valid for C/ObjC but not for C++ In file included from project.h:149, from em.cpp:23: binder.h:35: warning: type qualifiers ignored on function return type In file included from project.h:150, from em.cpp:23: em.h:84: warning: type qualifiers ignored on function return type em.h:85: warning: type qualifiers ignored on function return type em.h:86: warning: type qualifiers ignored on function return type em.h:88: warning: type qualifiers ignored on function return type em.h:89: warning: type qualifiers ignored on function return type em.h:90: warning: type qualifiers ignored on function return type em.h:91: warning: type qualifiers ignored on function return type em.h:93: warning: type qualifiers ignored on function return type em.h:99: warning: type qualifiers ignored on function return type em.h:116: warning: type qualifiers ignored on function return type em.h:125: warning: type qualifiers ignored on function return type In file included from project.h:154, from em.cpp:23: eventmachine.h:46: warning: type qualifiers ignored on function return type eventmachine.h:47: warning: type qualifiers ignored on function return type eventmachine.h:48: warning: type qualifiers ignored on function return type eventmachine.h:50: warning: type qualifiers ignored on function return type eventmachine.h:65: warning: type qualifiers ignored on function return type eventmachine.h:66: warning: type qualifiers ignored on function return type eventmachine.h:67: warning: type qualifiers ignored on function return type eventmachine.h:68: warning: type qualifiers ignored on function return type In file included from project.h:154, from em.cpp:23: eventmachine.h:103: warning: type qualifiers ignored on function return type eventmachine.h:105: warning: type qualifiers ignored on function return type eventmachine.h:108: warning: type qualifiers ignored on function return type em.cpp: In member function 'bool EventMachine_t::_RunEpollOnce()': em.cpp:578: warning: 'int rb_thread_select(int, fd_set*, fd_set*, fd_set*, timeval*)' is deprecated (declared at /home/eventhub/.rvm/rubies/ruby-1.9.3-p125/include/ruby-1.9.1/ruby/intern.h:379) em.cpp:578: warning: 'int rb_thread_select(int, fd_set*, fd_set*, fd_set*, timeval*)' is deprecated (declared at /home/eventhub/.rvm/rubies/ruby-1.9.3-p125/include/ruby-1.9.1/ruby/intern.h:379) em.cpp: In member function 'bool EventMachine_t::_RunSelectOnce()': em.cpp:974: warning: 'int rb_thread_select(int, fd_set*, fd_set*, fd_set*, timeval*)' is deprecated (declared at /home/eventhub/.rvm/rubies/ruby-1.9.3-p125/include/ruby-1.9.1/ruby/intern.h:379) em.cpp:974: warning: 'int rb_thread_select(int, fd_set*, fd_set*, fd_set*, timeval*)' is deprecated (declared at /home/eventhub/.rvm/rubies/ruby-1.9.3-p125/include/ruby-1.9.1/ruby/intern.h:379) em.cpp: At global scope: em.cpp:1057: warning: type qualifiers ignored on function return type em.cpp:1079: warning: type qualifiers ignored on function return type em.cpp:1265: warning: type qualifiers ignored on function return type em.cpp:1338: warning: type qualifiers ignored on function return type em.cpp:1510: warning: type qualifiers ignored on function return type em.cpp:1593: warning: type qualifiers ignored on function return type em.cpp:1856: warning: type qualifiers ignored on function return type em.cpp:1982: warning: type qualifiers ignored on function return type em.cpp:2046: warning: type qualifiers ignored on function return type em.cpp:2070: warning: type qualifiers ignored on function return type em.cpp:2142: warning: type qualifiers ignored on function return type em.cpp:2361: fatal error: error writing to /tmp/ccdlOK0T.s: No space left on device compilation terminated. make: *** [em.o] Error 1 Gem files will remain installed in /home/eventhub/.rvm/gems/ruby-1.9.3-p125/gems/eventmachine-1.0.1 for inspection. Results logged to /home/eventhub/.rvm/gems/ruby-1.9.3-p125/gems/eventmachine-1.0.1/ext/gem_make.out Any thoughts? I read a lot of different ways to solve this issue, but none of them worked. Thanks

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• [PHP] function().function() VS function()function()

  - by kwokwai

  Hi all, I was writing a foreach Loop in PHP5. Here is the script: foreach(range('A','Z') as $char) // line 1 { // line 2 echo strtoupper($char)strtolower($char); // line 3 } // line 4 And I got this error message Parse error: parse error, unexpected T_STRING in testing.php on line 3 I spent almost an hour to figure out I should add a dot between two functions like this: echo strtoupper($char).strtolower($char); So I can't tell the difference between these two lines of codes: echo strtoupper($char).strtolower($char); echo strtoupper($char)strtolower($char);

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• Disallow private constructor invocation in friend function

  - by user2907032

  Is there any way to not allow private construction in friend function, In case we do have private constructor with friend function in our class. Only Static method should be responsible for object creation and other than this compiler should flash error message #include <iostream> #include <memory> using namespace std; class a { public: void see () { cout<<"Motimaa"; } static a& getinstance() { static a instance; return instance; } private: a() {}; friend void access(); }; void access () { a obj; obj.see();//still friend function can access } int main() { a::getinstance().see(); access(); return 1; }

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• Using a pre-existing function for a new row

  - by Jonathan Kushner

  I have an Excel document that contains X columns and N number of rows. The very last column of a row performs a SUM of the first X-1 columns. The problem I have is, the user of this Excel document progressively adds rows to the document, and because of this, the function does not exist yet in the last column for new rows. I need a way to have this function exist in new rows dynamically (the user is not Excel-savvy and doesn't have the ability to just drag the function down a row).

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• Error in running script [closed]

  - by SWEngineer

  I'm trying to run heathusf_v1.1.0.tar.gz found here I installed tcsh to make build_heathusf work. But, when I run ./build_heathusf, I get the following (I'm running that on a Fedora Linux system from Terminal): $ ./build_heathusf Compiling programs to build a library of image processing functions. convexpolyscan.c: In function ‘cdelete’: convexpolyscan.c:346:5: warning: incompatible implicit declaration of built-in function ‘bcopy’ [enabled by default] myalloc.c: In function ‘mycalloc’: myalloc.c:68:16: error: invalid storage class for function ‘store_link’ myalloc.c: In function ‘mymalloc’: myalloc.c:101:16: error: invalid storage class for function ‘store_link’ myalloc.c: In function ‘myfree’: myalloc.c:129:27: error: invalid storage class for function ‘find_link’ myalloc.c:131:12: warning: assignment makes pointer from integer without a cast [enabled by default] myalloc.c: At top level: myalloc.c:150:13: warning: conflicting types for ‘store_link’ [enabled by default] myalloc.c:150:13: error: static declaration of ‘store_link’ follows non-static declaration myalloc.c:91:4: note: previous implicit declaration of ‘store_link’ was here myalloc.c:164:24: error: conflicting types for ‘find_link’ myalloc.c:131:14: note: previous implicit declaration of ‘find_link’ was here Building the mammogram resizing program. gcc -O2 -I. -I../common mkimage.o -o mkimage -L../common -lmammo -lm ../common/libmammo.a(aggregate.o): In function `aggregate': aggregate.c:(.text+0x7fa): undefined reference to `mycalloc' aggregate.c:(.text+0x81c): undefined reference to `mycalloc' aggregate.c:(.text+0x868): undefined reference to `mycalloc' ../common/libmammo.a(aggregate.o): In function `aggregate_median': aggregate.c:(.text+0xbc5): undefined reference to `mymalloc' aggregate.c:(.text+0xbfb): undefined reference to `mycalloc' aggregate.c:(.text+0xc3c): undefined reference to `mycalloc' ../common/libmammo.a(aggregate.o): In function `aggregate': aggregate.c:(.text+0x9b5): undefined reference to `myfree' ../common/libmammo.a(aggregate.o): In function `aggregate_median': aggregate.c:(.text+0xd85): undefined reference to `myfree' ../common/libmammo.a(optical_density.o): In function `linear_optical_density': optical_density.c:(.text+0x29e): undefined reference to `mymalloc' optical_density.c:(.text+0x342): undefined reference to `mycalloc' optical_density.c:(.text+0x383): undefined reference to `mycalloc' ../common/libmammo.a(optical_density.o): In function `log10_optical_density': optical_density.c:(.text+0x693): undefined reference to `mymalloc' optical_density.c:(.text+0x74f): undefined reference to `mycalloc' optical_density.c:(.text+0x790): undefined reference to `mycalloc' ../common/libmammo.a(optical_density.o): In function `map_with_ushort_lut': optical_density.c:(.text+0xb2e): undefined reference to `mymalloc' optical_density.c:(.text+0xb87): undefined reference to `mycalloc' optical_density.c:(.text+0xbc6): undefined reference to `mycalloc' ../common/libmammo.a(optical_density.o): In function `linear_optical_density': optical_density.c:(.text+0x4d9): undefined reference to `myfree' ../common/libmammo.a(optical_density.o): In function `log10_optical_density': optical_density.c:(.text+0x8f1): undefined reference to `myfree' ../common/libmammo.a(optical_density.o): In function `map_with_ushort_lut': optical_density.c:(.text+0xd0d): undefined reference to `myfree' ../common/libmammo.a(virtual_image.o): In function `deallocate_cached_image': virtual_image.c:(.text+0x3dc6): undefined reference to `myfree' virtual_image.c:(.text+0x3dd7): undefined reference to `myfree' ../common/libmammo.a(virtual_image.o):virtual_image.c:(.text+0x3de5): more undefined references to `myfree' follow ../common/libmammo.a(virtual_image.o): In function `allocate_cached_image': virtual_image.c:(.text+0x4233): undefined reference to `mycalloc' virtual_image.c:(.text+0x4253): undefined reference to `mymalloc' virtual_image.c:(.text+0x4275): undefined reference to `mycalloc' virtual_image.c:(.text+0x42e7): undefined reference to `mycalloc' virtual_image.c:(.text+0x44f9): undefined reference to `mycalloc' virtual_image.c:(.text+0x47a9): undefined reference to `mycalloc' virtual_image.c:(.text+0x4a45): undefined reference to `mycalloc' virtual_image.c:(.text+0x4af4): undefined reference to `myfree' collect2: error: ld returned 1 exit status make: *** [mkimage] Error 1 Building the breast segmentation program. gcc -O2 -I. -I../common breastsegment.o segment.o -o breastsegment -L../common -lmammo -lm breastsegment.o: In function `render_segmentation_sketch': breastsegment.c:(.text+0x43): undefined reference to `mycalloc' breastsegment.c:(.text+0x58): undefined reference to `mycalloc' breastsegment.c:(.text+0x12f): undefined reference to `mycalloc' breastsegment.c:(.text+0x1b9): undefined reference to `myfree' breastsegment.c:(.text+0x1c6): undefined reference to `myfree' breastsegment.c:(.text+0x1e1): undefined reference to `myfree' segment.o: In function `find_center': segment.c:(.text+0x53): undefined reference to `mycalloc' segment.c:(.text+0x71): undefined reference to `mycalloc' segment.c:(.text+0x387): undefined reference to `myfree' segment.o: In function `bordercode': segment.c:(.text+0x4ac): undefined reference to `mycalloc' segment.c:(.text+0x546): undefined reference to `mycalloc' segment.c:(.text+0x651): undefined reference to `mycalloc' segment.c:(.text+0x691): undefined reference to `myfree' segment.o: In function `estimate_tissue_image': segment.c:(.text+0x10d4): undefined reference to `mycalloc' segment.c:(.text+0x14da): undefined reference to `mycalloc' segment.c:(.text+0x1698): undefined reference to `mycalloc' segment.c:(.text+0x1834): undefined reference to `mycalloc' segment.c:(.text+0x1850): undefined reference to `mycalloc' segment.o:segment.c:(.text+0x186a): more undefined references to `mycalloc' follow segment.o: In function `estimate_tissue_image': segment.c:(.text+0x1bbc): undefined reference to `myfree' segment.c:(.text+0x1c4a): undefined reference to `mycalloc' segment.c:(.text+0x1c7c): undefined reference to `mycalloc' segment.c:(.text+0x1d8e): undefined reference to `myfree' segment.c:(.text+0x1d9b): undefined reference to `myfree' segment.c:(.text+0x1da8): undefined reference to `myfree' segment.c:(.text+0x1dba): undefined reference to `myfree' segment.c:(.text+0x1dc9): undefined reference to `myfree' segment.o:segment.c:(.text+0x1dd8): more undefined references to `myfree' follow segment.o: In function `estimate_tissue_image': segment.c:(.text+0x20bf): undefined reference to `mycalloc' segment.o: In function `segment_breast': segment.c:(.text+0x24cd): undefined reference to `mycalloc' segment.o: In function `find_center': segment.c:(.text+0x3a4): undefined reference to `myfree' segment.o: In function `bordercode': segment.c:(.text+0x6ac): undefined reference to `myfree' ../common/libmammo.a(aggregate.o): In function `aggregate': aggregate.c:(.text+0x7fa): undefined reference to `mycalloc' aggregate.c:(.text+0x81c): undefined reference to `mycalloc' aggregate.c:(.text+0x868): undefined reference to `mycalloc' ../common/libmammo.a(aggregate.o): In function `aggregate_median': aggregate.c:(.text+0xbc5): undefined reference to `mymalloc' aggregate.c:(.text+0xbfb): undefined reference to `mycalloc' aggregate.c:(.text+0xc3c): undefined reference to `mycalloc' ../common/libmammo.a(aggregate.o): In function `aggregate': aggregate.c:(.text+0x9b5): undefined reference to `myfree' ../common/libmammo.a(aggregate.o): In function `aggregate_median': aggregate.c:(.text+0xd85): undefined reference to `myfree' ../common/libmammo.a(cc_label.o): In function `cc_label': cc_label.c:(.text+0x20c): undefined reference to `mycalloc' cc_label.c:(.text+0x6c2): undefined reference to `mycalloc' cc_label.c:(.text+0xbaa): undefined reference to `myfree' ../common/libmammo.a(cc_label.o): In function `cc_label_0bkgd': cc_label.c:(.text+0xe17): undefined reference to `mycalloc' cc_label.c:(.text+0x12d7): undefined reference to `mycalloc' cc_label.c:(.text+0x17e7): undefined reference to `myfree' ../common/libmammo.a(cc_label.o): In function `cc_relabel_by_intensity': cc_label.c:(.text+0x18c5): undefined reference to `mycalloc' ../common/libmammo.a(cc_label.o): In function `cc_label_4connect': cc_label.c:(.text+0x1cf0): undefined reference to `mycalloc' cc_label.c:(.text+0x2195): undefined reference to `mycalloc' cc_label.c:(.text+0x26a4): undefined reference to `myfree' ../common/libmammo.a(cc_label.o): In function `cc_relabel_by_intensity': cc_label.c:(.text+0x1b06): undefined reference to `myfree' ../common/libmammo.a(convexpolyscan.o): In function `polyscan_coords': convexpolyscan.c:(.text+0x6f0): undefined reference to `mycalloc' convexpolyscan.c:(.text+0x75f): undefined reference to `mycalloc' convexpolyscan.c:(.text+0x7ab): undefined reference to `myfree' convexpolyscan.c:(.text+0x7b8): undefined reference to `myfree' ../common/libmammo.a(convexpolyscan.o): In function `polyscan_poly_cacheim': convexpolyscan.c:(.text+0x805): undefined reference to `mycalloc' convexpolyscan.c:(.text+0x894): undefined reference to `myfree' ../common/libmammo.a(mikesfileio.o): In function `read_segmentation_file': mikesfileio.c:(.text+0x1e9): undefined reference to `mycalloc' mikesfileio.c:(.text+0x205): undefined reference to `mycalloc' ../common/libmammo.a(optical_density.o): In function `linear_optical_density': optical_density.c:(.text+0x29e): undefined reference to `mymalloc' optical_density.c:(.text+0x342): undefined reference to `mycalloc' optical_density.c:(.text+0x383): undefined reference to `mycalloc' ../common/libmammo.a(optical_density.o): In function `log10_optical_density': optical_density.c:(.text+0x693): undefined reference to `mymalloc' optical_density.c:(.text+0x74f): undefined reference to `mycalloc' optical_density.c:(.text+0x790): undefined reference to `mycalloc' ../common/libmammo.a(optical_density.o): In function `map_with_ushort_lut': optical_density.c:(.text+0xb2e): undefined reference to `mymalloc' optical_density.c:(.text+0xb87): undefined reference to `mycalloc' optical_density.c:(.text+0xbc6): undefined reference to `mycalloc' ../common/libmammo.a(optical_density.o): In function `linear_optical_density': optical_density.c:(.text+0x4d9): undefined reference to `myfree' ../common/libmammo.a(optical_density.o): In function `log10_optical_density': optical_density.c:(.text+0x8f1): undefined reference to `myfree' ../common/libmammo.a(optical_density.o): In function `map_with_ushort_lut': optical_density.c:(.text+0xd0d): undefined reference to `myfree' ../common/libmammo.a(virtual_image.o): In function `deallocate_cached_image': virtual_image.c:(.text+0x3dc6): undefined reference to `myfree' virtual_image.c:(.text+0x3dd7): undefined reference to `myfree' ../common/libmammo.a(virtual_image.o):virtual_image.c:(.text+0x3de5): more undefined references to `myfree' follow ../common/libmammo.a(virtual_image.o): In function `allocate_cached_image': virtual_image.c:(.text+0x4233): undefined reference to `mycalloc' virtual_image.c:(.text+0x4253): undefined reference to `mymalloc' virtual_image.c:(.text+0x4275): undefined reference to `mycalloc' virtual_image.c:(.text+0x42e7): undefined reference to `mycalloc' virtual_image.c:(.text+0x44f9): undefined reference to `mycalloc' virtual_image.c:(.text+0x47a9): undefined reference to `mycalloc' virtual_image.c:(.text+0x4a45): undefined reference to `mycalloc' virtual_image.c:(.text+0x4af4): undefined reference to `myfree' collect2: error: ld returned 1 exit status make: *** [breastsegment] Error 1 Building the mass feature generation program. gcc -O2 -I. -I../common afumfeature.o -o afumfeature -L../common -lmammo -lm afumfeature.o: In function `afum_process': afumfeature.c:(.text+0xd80): undefined reference to `mycalloc' afumfeature.c:(.text+0xd9c): undefined reference to `mycalloc' afumfeature.c:(.text+0xe80): undefined reference to `mycalloc' afumfeature.c:(.text+0x11f8): undefined reference to `myfree' afumfeature.c:(.text+0x1207): undefined reference to `myfree' afumfeature.c:(.text+0x1214): undefined reference to `myfree' ../common/libmammo.a(aggregate.o): In function `aggregate': aggregate.c:(.text+0x7fa): undefined reference to `mycalloc' aggregate.c:(.text+0x81c): undefined reference to `mycalloc' aggregate.c:(.text+0x868): undefined reference to `mycalloc' ../common/libmammo.a(aggregate.o): In function `aggregate_median': aggregate.c:(.text+0xbc5): undefined reference to `mymalloc' aggregate.c:(.text+0xbfb): undefined reference to `mycalloc' aggregate.c:(.text+0xc3c): undefined reference to `mycalloc' ../common/libmammo.a(aggregate.o): In function `aggregate': aggregate.c:(.text+0x9b5): undefined reference to `myfree' ../common/libmammo.a(aggregate.o): In function `aggregate_median': aggregate.c:(.text+0xd85): undefined reference to `myfree' ../common/libmammo.a(convexpolyscan.o): In function `polyscan_coords': convexpolyscan.c:(.text+0x6f0): undefined reference to `mycalloc' convexpolyscan.c:(.text+0x75f): undefined reference to `mycalloc' convexpolyscan.c:(.text+0x7ab): undefined reference to `myfree' convexpolyscan.c:(.text+0x7b8): undefined reference to `myfree' ../common/libmammo.a(convexpolyscan.o): In function `polyscan_poly_cacheim': convexpolyscan.c:(.text+0x805): undefined reference to `mycalloc' convexpolyscan.c:(.text+0x894): undefined reference to `myfree' ../common/libmammo.a(mikesfileio.o): In function `read_segmentation_file': mikesfileio.c:(.text+0x1e9): undefined reference to `mycalloc' mikesfileio.c:(.text+0x205): undefined reference to `mycalloc' ../common/libmammo.a(optical_density.o): In function `linear_optical_density': optical_density.c:(.text+0x29e): undefined reference to `mymalloc' optical_density.c:(.text+0x342): undefined reference to `mycalloc' optical_density.c:(.text+0x383): undefined reference to `mycalloc' ../common/libmammo.a(optical_density.o): In function `log10_optical_density': optical_density.c:(.text+0x693): undefined reference to `mymalloc' optical_density.c:(.text+0x74f): undefined reference to `mycalloc' optical_density.c:(.text+0x790): undefined reference to `mycalloc' ../common/libmammo.a(optical_density.o): In function `map_with_ushort_lut': optical_density.c:(.text+0xb2e): undefined reference to `mymalloc' optical_density.c:(.text+0xb87): undefined reference to `mycalloc' optical_density.c:(.text+0xbc6): undefined reference to `mycalloc' ../common/libmammo.a(optical_density.o): In function `linear_optical_density': optical_density.c:(.text+0x4d9): undefined reference to `myfree' ../common/libmammo.a(optical_density.o): In function `log10_optical_density': optical_density.c:(.text+0x8f1): undefined reference to `myfree' ../common/libmammo.a(optical_density.o): In function `map_with_ushort_lut': optical_density.c:(.text+0xd0d): undefined reference to `myfree' ../common/libmammo.a(virtual_image.o): In function `deallocate_cached_image': virtual_image.c:(.text+0x3dc6): undefined reference to `myfree' virtual_image.c:(.text+0x3dd7): undefined reference to `myfree' ../common/libmammo.a(virtual_image.o):virtual_image.c:(.text+0x3de5): more undefined references to `myfree' follow ../common/libmammo.a(virtual_image.o): In function `allocate_cached_image': virtual_image.c:(.text+0x4233): undefined reference to `mycalloc' virtual_image.c:(.text+0x4253): undefined reference to `mymalloc' virtual_image.c:(.text+0x4275): undefined reference to `mycalloc' virtual_image.c:(.text+0x42e7): undefined reference to `mycalloc' virtual_image.c:(.text+0x44f9): undefined reference to `mycalloc' virtual_image.c:(.text+0x47a9): undefined reference to `mycalloc' virtual_image.c:(.text+0x4a45): undefined reference to `mycalloc' virtual_image.c:(.text+0x4af4): undefined reference to `myfree' collect2: error: ld returned 1 exit status make: *** [afumfeature] Error 1 Building the mass detection program. make: Nothing to be done for `all'. Building the performance evaluation program. gcc -O2 -I. -I../common DDSMeval.o polyscan.o -o DDSMeval -L../common -lmammo -lm ../common/libmammo.a(mikesfileio.o): In function `read_segmentation_file': mikesfileio.c:(.text+0x1e9): undefined reference to `mycalloc' mikesfileio.c:(.text+0x205): undefined reference to `mycalloc' collect2: error: ld returned 1 exit status make: *** [DDSMeval] Error 1 Building the template creation program. gcc -O2 -I. -I../common mktemplate.o polyscan.o -o mktemplate -L../common -lmammo -lm Building the drawimage program. gcc -O2 -I. -I../common drawimage.o -o drawimage -L../common -lmammo -lm ../common/libmammo.a(mikesfileio.o): In function `read_segmentation_file': mikesfileio.c:(.text+0x1e9): undefined reference to `mycalloc' mikesfileio.c:(.text+0x205): undefined reference to `mycalloc' collect2: error: ld returned 1 exit status make: *** [drawimage] Error 1 Building the compression/decompression program jpeg. gcc -O2 -DSYSV -DNOTRUNCATE -c lexer.c lexer.c:41:1: error: initializer element is not constant lexer.c:41:1: error: (near initialization for ‘yyin’) lexer.c:41:1: error: initializer element is not constant lexer.c:41:1: error: (near initialization for ‘yyout’) lexer.c: In function ‘initparser’: lexer.c:387:21: warning: incompatible implicit declaration of built-in function ‘strlen’ [enabled by default] lexer.c: In function ‘MakeLink’: lexer.c:443:16: warning: incompatible implicit declaration of built-in function ‘malloc’ [enabled by default] lexer.c:447:7: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c:452:7: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c:455:34: warning: incompatible implicit declaration of built-in function ‘calloc’ [enabled by default] lexer.c:458:7: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c:460:3: warning: incompatible implicit declaration of built-in function ‘strcpy’ [enabled by default] lexer.c: In function ‘getstr’: lexer.c:548:26: warning: incompatible implicit declaration of built-in function ‘malloc’ [enabled by default] lexer.c:552:4: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c:557:21: warning: incompatible implicit declaration of built-in function ‘calloc’ [enabled by default] lexer.c:557:28: warning: incompatible implicit declaration of built-in function ‘strlen’ [enabled by default] lexer.c:561:7: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c: In function ‘parser’: lexer.c:794:21: warning: incompatible implicit declaration of built-in function ‘calloc’ [enabled by default] lexer.c:798:8: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c:1074:21: warning: incompatible implicit declaration of built-in function ‘calloc’ [enabled by default] lexer.c:1078:8: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c:1116:21: warning: incompatible implicit declaration of built-in function ‘calloc’ [enabled by default] lexer.c:1120:8: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c:1154:25: warning: incompatible implicit declaration of built-in function ‘calloc’ [enabled by default] lexer.c:1158:5: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c:1190:5: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c:1247:25: warning: incompatible implicit declaration of built-in function ‘calloc’ [enabled by default] lexer.c:1251:5: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c:1283:5: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default] lexer.c: In function ‘yylook’: lexer.c:1867:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] lexer.c:1867:20: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] lexer.c:1877:12: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] lexer.c:1877:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] make: *** [lexer.o] Error 1

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• MySql Friend of my friends and Friend of my of my Friends of my Friends

  - by user1907522

  i have a problem with mysql query, and can't get it done in any way. I already checked the other topics, but can't get any of the solutions to work in my case. I have 2 tables, one is users id, name, email.... and second for friends is named friends :) user1_id, user2_id now i need to get from the database all of the user info for friends of my friends, and next level friends, the Friend of my of my Friends of my Friends, those should be 2 separate queries. Of course the search should exclude me, and be distinct. Please help.

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• A question about friend functions

  - by Als

  I faced a problem recently with a 3rd party library which generates classes from a xml. Here is a gist of it: class B; class A { void doSomething(); friend class B; }; class B { void doSomething(); void doSomethingMore() { doSomething(); } }; The compiler flags call to the function doSomething() as ambiguous and flags it as an compiler error. It is easy to understand why it gives the error.Class B being friend of class A, every member of class B has access to all the members of class A. Renaming of the either of functions resolved my problem but it got me thinking that shouldn't in this case the compiler should give a priority to the class's own member function over the function in another class of which it is a friend?

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• SQL SERVER – Introduction to Function SIGN

  - by pinaldave

  Yesterday I received an email from a friend asking how do SIGN function works. Well SIGN Function is very fundamental function. It will return the value 1, -1 or 0. If your value is negative it will return you negative -1 and if it is positive it will return you positive +1. Let us start with a simple small example. DECLARE @IntVal1 INT, @IntVal2 INT,@IntVal3 INT DECLARE @NumVal1 DECIMAL(4,2), @NumVal2 DECIMAL(4,2),@NumVal3 DECIMAL(4,2) SET @IntVal1 = 9; SET @IntVal2 = -9; SET @IntVal3 = 0; SET @NumVal1 = 9.0; SET @NumVal2 = -9.0; SET @NumVal3 = 0.0; SELECT SIGN(@IntVal1) IntVal1,SIGN(@IntVal2) IntVal2,SIGN(@IntVal3) IntVal3 SELECT SIGN(@NumVal1) NumVal1,SIGN(@NumVal2) NumVal2,SIGN(@NumVal2) NumVal3   The above function will give us following result set. You will notice that when there is positive value the function gives positive values and if the values are negative it will return you negative values. Also you will notice that if the data type is  INT the return value is INT and when the value passed to the function is Numeric the result also matches it. Not every datatype is compatible with this function.  Here is the quick look up of the return types. bigint -> bigint int/smallint/tinyint -> int money/smallmoney -> money numeric/decimal -> numeric/decimal everybody else -> float What will be the best example of the usage of this function that you will not have to use the CASE Statement. Here is example of CASE Statement usage and the same replaced with SIGN function. USE tempdb GO CREATE TABLE TestTable (Date1 SMALLDATETIME, Date2 SMALLDATETIME) INSERT INTO TestTable (Date1, Date2) SELECT '2012-06-22 16:15', '2012-06-20 16:15' UNION ALL SELECT '2012-06-24 16:15', '2012-06-22 16:15' UNION ALL SELECT '2012-06-22 16:15', '2012-06-22 16:15' GO -- Using Case Statement SELECT CASE WHEN DATEDIFF(d,Date1,Date2) > 0 THEN 1 WHEN DATEDIFF(d,Date1,Date2) < 0 THEN -1 ELSE 0 END AS Col FROM TestTable GO -- Using SIGN Function SELECT SIGN(DATEDIFF(d,Date1,Date2)) AS Col FROM TestTable GO DROP TABLE TestTable GO This was interesting blog post for me to write. Let me know your opinion. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Function, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• friend declaration in C++

  - by Happy Mittal

  In Thinking in C++ by Bruce eckel, there is an example given regarding friend functions as // Declaration (incomplete type specification): struct X; struct Y { void f(X*); }; struct X { // Definition private: int i; public: friend void Y::f(X*); // Struct member friend }; void Y::f(X* x) { x->i = 47; } Now he explained this: Notice that Y::f(X*) takes the address of an X object. This is critical because the compiler always knows how to pass an address, which is of a fixed size regardless of the object being passed, even if it doesn’t have full information about the size of the type. If you try to pass the whole object, however, the compiler must see the entire structure definition of X, to know the size and how to pass it, before it allows you to declare a function such as Y::g(X). But when I tried void f(X); as declaration in struct Y, it shows no error. Please explain why?

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• Which languages support *recursive* function literals / anonymous functions?

  - by Hugh Allen

  It seems quite a few mainstream languages support function literals these days. They are also called anonymous functions, but I don't care if they have a name. The important thing is that a function literal is an expression which yields a function which hasn't already been defined elsewhere, so for example in C, &printf doesn't count. EDIT to add: if you have a genuine function literal expression <exp>, you should be able to pass it to a function f(<exp>) or immediately apply it to an argument, ie. <exp>(5). I'm curious which languages let you write function literals which are recursive. Wikipedia's "anonymous recursion" article doesn't give any programming examples. Let's use the recursive factorial function as the example. Here are the ones I know: JavaScript / ECMAScript can do it with callee: function(n){if (n<2) {return 1;} else {return n * arguments.callee(n-1);}} it's easy in languages with letrec, eg Haskell (which calls it let): let fac x = if x<2 then 1 else fac (x-1) * x in fac and there are equivalents in Lisp and Scheme. Note that the binding of fac is local to the expression, so the whole expression is in fact an anonymous function. Are there any others?

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• Javascript: Calling a function written in an anonymous function from String with the function's name

  - by Kai barry yuzanic

  Hello. I've started using jQuery and am wondering how to call functions in an anonymous function dynamically from String. Let's say for instance, I have the following functions: function foo() { // Being in the global namespace, // this function can be called with window['foo']() alert("foo"); } jQuery(document).ready(function(){ function bar() { // How can this function be called // by using a String of the function's name 'bar'?? alert("bar"); } // I want to call the function bar here from String with the name 'bar' } I've been trying to figure out what could be the counterpart of 'window', which can call functions from the global namespace such as window["foo"]. In the small example above, how I can call the function bar from a String "bar"? Thank you for your help.

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• overloading friend operator<< for template class

  - by starcorn

  Hello, I have read couple of the question regarding my problem on stackoverflow now, and none of it seems to solve my problem. Or I maybe have done it wrong... The overloaded << if I make it into an inline function. But how do I make it work in my case? warning: friend declaration std::ostream& operator<<(std::ostream&, const D<classT>&)' declares a non-template function warning: (if this is not what you intended, make sure the function template has already been declared and add <> after the function name here) -Wno-non-template-friend disables this warning /tmp/cc6VTWdv.o:uppgift4.cc:(.text+0x180): undefined reference to operator<<(std::basic_ostream<char, std::char_traits<char> >&, D<int> const&)' collect2: ld returned 1 exit status template <class T> T my_max(T a, T b) { if(a > b) return a; else return b; } template <class classT> class D { public: D(classT in) : d(in) {}; bool operator>(const D& rhs) const; classT operator=(const D<classT>& rhs); friend ostream& operator<< (ostream & os, const D<classT>& rhs); private: classT d; }; int main() { int i1 = 1; int i2 = 2; D<int> d1(i1); D<int> d2(i2); cout << my_max(d1,d2) << endl; return 0; } template <class classT> ostream& operator<<(ostream &os, const D<classT>& rhs) { os << rhs.d; return os; }

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• PHP: friend classes and ungreedy caller function/class

  - by avetis.kazarian

  Is there any way to get the caller function with something else than debug_backtrace()? I'm looking for a less greedy way to simulate scopes like friend or internal. Let's say I have a class A and a class B. Until now, I've been using debug_backtrace(), which is too greedy (IMHO). I thought of something like this: <?php class A { public function __construct(B $callerObj) {} } class B { public function someMethod() { $obj = new A($this); } } ?> It might be OK if you want to limit it to one specific class, but let's say I have 300 classes, and I want to limit it to 25 of them? One way could be using an interface to aggregate: public function __construct(CallerInterface $callerObj) But it's still an ugly code. Moreover, you can't use that trick with static classes. Have any better idea?

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• Database and query to store and retreive friend list [migrated]

  - by amr Kamboj

  I am developing a module in website to save and retreive friend list. I am using Zend Framework and for DB handling I am using Doctrine(ORM). There are two models: 1) users that stores all the users 2) my_friends that stores the friend list (that is refference table with M:M relation of user) the structure of my_friends is following ...id..........user_id............friend_id........approved.... ...10.........20 ..................25...................1.......... ...10.........21 ..................25...................1.......... ...10.........22 ..................30...................1.......... ...10.........25 ..................30...................1.......... The Doctrine query to retreive friend list id follwing $friends = Doctrine_Query::create()->from('my_friends as mf') ->leftJoin('mf.users as friend') ->where("mf.user_id = 25") ->andWhere("mf.approved = 1"); Suppose I am viewing the user no.- 25. With this query I am only getting the user no.- 30. where as user no.- 25 is also approved friend of user no.- 20 and 21. Please guide me, what should be the query to find all friend and is there any need to change the DB structure.

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• How to define and use a friend function to a temlate class with the same template?

  - by Narek

  I have written the following code: #include <iostream> using namespace std; template <class T> class AA { T a; public: AA() { a = 7; } friend void print(const AA<T> & z); }; template <class T> void print(const AA<T> & z) { cout<<"Print: "<<z.a<<endl; } void main() { AA<int> a; print<int>(a); } And getting the following error: error C2248: 'AA<T>::a' : cannot access private member declared in class 'AA<T>' 1> with 1> [ 1> T=int 1> ] 1> c:\users\narek\documents\visual studio 2008\projects\aaa\aaa\a.cpp(7) : see declaration of 'AA<T>::a' 1> with 1> [ 1> T=int 1> ] 1> c:\users\narek\documents\visual studio 2008\projects\aaa\aaa\a.cpp(30) : see reference to function template instantiation 'void print<int>(const AA<T> &)' being compiled 1> with 1> [ 1> T=int 1> ] What's wrong?

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• Different function returns from command line and within function

  - by Myx

  Hello: I have an extremely bizzare situation: I have a function in MATLAB which calls three other main functions and produces two figures for me. The function reads in an input jpeg image, crops it, segments it using kmeans clustering, and outputs 2 figures to the screen - the original image and the clustered image with the cluster centers indicated. Here is the function in MATLAB: function [textured_avg_x photo_avg_x] = process_database_images() clear all warning off %#ok type_num_max = 3; % type is 1='texture', 2='graph', or 3='photo' type_num_max = 1; img_max_num_photo = 100; % 400 photo images img_max_num_other = 100; % 100 textured, and graph images for type_num = 1:2:type_num_max if(type_num == 3) img_num_max = img_max_num_photo; else img_num_max = img_max_num_other; end img_num_max = 1; for img_num = 1:img_num_max [type img] = load_image(type_num, img_num); %img = imread('..\images\445.jpg'); img = crop_image(img); [IDX k block_bounds features] = segment_image(img); end end end The function segment_image first shows me the color image that was passed in, performs kmeans clustering, and outputs the clustered image. When I run this function on a particular image, I get 3 clusters (which is not what I expect to get). When I run the following commands from the MATLAB command prompt: >> img = imread('..\images\texture\1.jpg'); >> img = crop_image(img); >> segment_image(img); then the first image that is displayed by segment_image is the same as when I run the function (so I know that the clustering is done on the same image) but the number of clusters is 16 (which is what I expect). In fact, when I run my process_database_images() function on my entire image database, EVERY image is evaluated to have 3 clusters (this is a problem), whereas when I test some images individually, I get in the range of 12-16 clusters, which is what I prefer and expect. Why is there such a discrepancy? Am I having some syntax bug in my process_database_images() function? If more code is required from me (i.e. segment_images function, or crop_image function), please let me know. Thanks.

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• MATLAB: different function returns from command line and within function

  - by Myx

  Hello: I have an extremely bizzare situation: I have a function in MATLAB which calls three other main functions and produces two figures for me. The function reads in an input jpeg image, crops it, segments it using kmeans clustering, and outputs 2 figures to the screen - the original image and the clustered image with the cluster centers indicated. Here is the function in MATLAB: function [textured_avg_x photo_avg_x] = process_database_images() clear all warning off %#ok type_num_max = 3; % type is 1='texture', 2='graph', or 3='photo' type_num_max = 1; img_max_num_photo = 100; % 400 photo images img_max_num_other = 100; % 100 textured, and graph images for type_num = 1:2:type_num_max if(type_num == 3) img_num_max = img_max_num_photo; else img_num_max = img_max_num_other; end img_num_max = 1; for img_num = 1:img_num_max [type img] = load_image(type_num, img_num); %img = imread('..\images\445.jpg'); img = crop_image(img); [IDX k block_bounds features] = segment_image(img); end end end The function segment_image first shows me the color image that was passed in, performs kmeans clustering, and outputs the clustered image. When I run this function on a particular image, I get 3 clusters (which is not what I expect to get). When I run the following commands from the MATLAB command prompt: >> img = imread('..\images\texture\1.jpg'); >> img = crop_image(img); >> segment_image(img); then the first image that is displayed by segment_image is the same as when I run the function (so I know that the clustering is done on the same image) but the number of clusters is 16 (which is what I expect). In fact, when I run my process_database_images() function on my entire image database, EVERY image is evaluated to have 3 clusters (this is a problem), whereas when I test some images individually, I get in the range of 12-16 clusters, which is what I prefer and expect. Why is there such a discrepancy? Am I having some syntax bug in my process_database_images() function? If more code is required from me (i.e. segment_images function, or crop_image function), please let me know. Thanks.

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