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  • `var = something rescue nil` behaviour

    - by JP
    In ruby you can throw a rescue at the end of an assignment to catch any errors that might come up. I have a function (below: a_function_that_may_fail) where it's convenient to let it throw an error if certain conditions aren't met. The following code works well post = {} # Other Hash stuff post['Caption'] = a_function_that_may_fail rescue nil However I'd like to have post['Caption'] not even set if the function fails. I know I can do: begin post['Caption'] = a_function_that_may_fail recsue end but that feels a little excessive - is there a simpler solution?

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  • Convert .cshrc to .bashrc

    - by Bobby
    I am new to Linux and I am trying to compile some code that needs environment variables set first. The script is in cshrc, but whenever I try to run that code I get "if: badly formed number" errors. I want to run it in bash instead. Is there an easy way to convert cshrc to bashrc?

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  • How come .net 4.0 and .net 2.0 CLR's can exist in a same machine

    - by Vinni
    I have a basic doubt that, How can we have both CLR's on a same machine. If this is possible, When I refer few dll's of 4.0 and setting application pool to 2.0 why Cant I run the website(I am getting errors).When we refer the dll's from web.config it means it searches for GAC when that particular 4.0 dll is available in GAC Why dont it load (How come it is not loading).. Please clarify my doubts

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  • Setting CLASSPATH during runtime IKVM

    - by Ciddan
    How do I set a CLASSPATH variable during runtime while using IKVM? I've been trying to do it by using: java.lang.System.setProperty("java.class.path", "whatever"); The class I'm calling requires a configuration file in the classpath to work - and I keep getting errors that seem to indicate that it hasn't gotten its settings. Is the way I'm trying to add variable incorrect?

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  • SyntaxError: Parse Error only happens in safari

    - by Josh Crowder
    Im getting SyntaxError: Parse Error, only on safari. Here is the code in question. <script type="text/javascript"> // I am using transloadit a jquery plugin. which works on every other page and is loading fine on safari by the looks of it. The errors is on line 44 which is export: { Can anyone see anything wrong with that page?

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  • [CakePHP] Can not Bake table model, controller and view

    - by user198003
    I developed small CakePHP application, and now I want to add one more table (in fact, model/controller/view) into system, named notes. I had already created a table of course. But when I run command cake bake model, I do not get table Notes on the list. I can add it manually, but after that I get some errors when running cake bake controller and cake bake view. Can you give me some clue why I have those problems, and how to add that new model?

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  • The confusion on python encoding

    - by zhangzhong
    I retrieved the data encoded in big5 from database,and I want to send the data as email of html content, the code is like this: html += """<tr><td>""" html += """unicode(rs[0], 'big5')""" # rs[0] is data encoded in big5 I run the script, but the error raised: UnicodeDecodeError: 'ascii' codec can't decode byte...... However, I tried the code in interactive python command line, there are no errors raised, could you give me the clue?

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  • Where to find __sync_add_and_fetch_8?

    - by Viet
    I got errors when trying to use __sync_add_and_fetch: test8.cpp:(.text+0x90e): undefined reference to `__sync_add_and_fetch_8' collect2: ld returned 1 exit status Please kindly advise how to rectify this. Specs: GCC/G++: 4.4.1 GNU/Linux 2.6.32 SMP i686 Many thanks!

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  • Android sdk download/update failing

    - by tad604
    I'm trying to update and install the latest Android SDK (API 8) and keep getting the following error: Failed to fetch URL https://dl-ssl.google.com/android/repository/repository.xml, reason: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target I'm running on OS X 10.6.3 If I visit the url in a browser I'm not getting any errors about an untrusted cert.

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  • Python: Convert a string to an integer

    - by Adam Nelson
    Does anybody have a quickie for converting an unsafe string to an int? The string typically comes back as: '234\r\n' or something like that. In this case I want 234. If '-1\r\n', I want -1. I never want the method to fail but I don't want to go so far as try, except, pass just to hide errors either (in case something extreme happens).

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  • How can I append a description to a Zend_Form_Element?

    - by Mallika Iyer
    I have the following Zend_Form_Element: $imginstructions = "Some description"; $img = $this->createElement('select','img'); $img->setAttrib('class', 'image-select'); $imgdecorator = $img->getDecorator('Description'); $imgdecorator->setOption('escape', false); $img->setLabel('Image:') ->setRequired(true) ->addMultiOptions($images) ->setValue('') ->setDescription($imginstructions) ->addErrorMessage('You must select an image'); $img->size = 5; $this->addElement($img); The description should appear next to the select box. The problem is : When an error is thrown, the html rendered changes so the description shows up below the select box, instead of beside it. HTML rendered before error is thrown: <dd id="img-element"> <select size="5" class="image-select" id="img" name="img" style="display: none;"> ...........options.............. </select> <p class="description">Some Description</p></dd> HTML rendered after error is thrown: <dd id="img-element"> <select size="5" class="image-select" id="img" name="img" style="display: none;"> ...........options.............. </select> <ul class="errors"><li>You must select an image</li></ul> <p class="description">Some Description</p></dd> Is there a way to force the error message to be appended as the last element in the DOM tree for the dd element? Something like: <dd id="img-element"> <select size="5" class="image-select" id="img" name="img" style="display: none;"> ...........options.............. </select> <p class="description">Some Description</p> <ul class="errors"><li>You must select an image</li></ul></dd> so the 'ul' is at the end of the dd DOM tree. Thanks, I appreciate your taking the time to respond to this question!

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  • Email pipe to php script working only sometimes

    - by Rixius
    I have a php pipe script that takes an attached *.csv from an email and saves and parses it. When the email is sent from where it is supposed to be coming from, it silently errors, however, when I take that same email and resend it from my address it goes through just fine. is there any simple reason it could be doing this?

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  • Error while compiling the Xcode project (IPhone)

    - by Sridhar
    Hello, I added ffmpeg iphone port into my library and I can able to use a few of its functions like avcodec_init(),.. without any errors. But when I include this function call "avcodec_register_all" Xcode is giving error after compilation The error message is : *--------------- ld: ldr 12-bit displacement out of range (4276 max +/-4096) in _CFRelease$stub in _CFRelease$stub from /Users/foxit/Documents/CameraTest/build/CameraTest.build/Debug-iphoneos/CameraTest.build/Objects-normal/armv6/CameraTest Command /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 failed with exit code 1 *------------- Does anyone know whats wrong with this ? Regards, Raghu

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  • Apache server randomly stopped working yesterday. How can I fix it?

    - by Clueless
    I use Apache version 2.2.11 through WampServer to host a website. Every time during the last week I tried to connect to localhost it went through and everything was fine. Now all of a sudden I get errors. I didn't change the configuration or anything as far as I know, it just stopped working for no apparent reason. As I said before, it's been working fine. Any way I can get it back up and working again?

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  • .net VS2008 compilation analyzer tool ?

    - by Matthieu
    Hi, I'm looking for a tool that allows me to analyze the compilation of a VS Solution (about 30 VS projects inside). I would like to know after the global solution compilation, which projets fail and forward errors to developers. Of course, I could analyze the compilation report... but I'm pretty sure that great tools are available ! What is for you the best one ? Thanks a lot !

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  • gcc segmentation fault compiling 20k file

    - by aaa
    hi. I have fairly large file, 20k lines long (auto generated). It has been compiling okay, but after adding new if/endif preprocessor block, I started getting gcc internal errors: segmentation fault. the code inside new preprocessor block is not being compiled, so I am not sure where the error is coming from. my only guess is memory, but as far as I can tell it does not exhaust computer memory. Any thoughts?

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  • How to send value to _popen?

    - by karikari
    Hi, I have a problem here. I need to send some value to 'text1 and 'text2'. For example, text1 = ...and this code below will refer to those values.. FILE *child = _popen("java -jar c:\\simmetrics.jar text1 text2 > c:\\test.txt", "r"); How can achieve it. I have done many ways, and it keep on giving me pointer errors.

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  • How to find error in TCL code

    - by Adi
    Hi all, I am learning TCL and wanted to know how can I find out errors in my code. I mean what line no is error happening or how can I debug it. Following is the code which I am trying : proc ldelete {list value}{ set ix [lsearch -exact $list $value] if{$ix >=0}{ return [lreplace $list $ix $ix] } else { return $list } } Following is the error i am getting : extra characters after close-brace I will appreciate the help. Thanks aditya

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  • Accessing MasterPage variable in content page

    - by mattgcon
    I am trying to reference a variable within my MasterPage but I am receiving errors. I have tried <%@ MasterType" %: which gives the following error: `Compiler Error Message: CS0030: Cannot convert type 'IPAMIntranet.IPAMIntranetMaster' to 'ASP.ipamintranetmaster_master' and "string tVar = ((MyNamespace.MyMasterPage)Master).variable" which gives the following error: `Unable to cast object of type 'ASP.ipamintranetmaster_master' to type 'IPAMIntranet.IPAMIntranetMaster'.` Does anyone know what is happening or am I missing something.

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  • C++ simple logging class with UTF-8 output [code example]

    - by Andrew
    Hello everyone, I was working on one of my academic projects and for the first time I needed pure C++ without GUI. After googling for a while, I did not find any simple and easy to use implementation for logging and created my own. This is a simple implementation with iostreams that logs messages to screen and to the file simultaneously. I was thinking of using templates but then I realized that I do not expect any changes and removed that. It is modified std::wostream with two added modifiers: 1. TimeStamp - prints time-stamp 2. LogMode(LogModes) - switches output: file only, screen only, file+screen. *Boost::utf8_codecvt_facet* is used for UTF-8 output. // ############################################################################ // # Name: MyLog.h # // # Purpose: Logging Class Header # // # Author: Andrew Drach # // # Modified by: <somebody> # // # Created: 03/21/10 # // # SVN-ID: $Id$ # // # Copyright: (c) 2010 Andrew Drach # // # Licence: <license> # // ############################################################################ #ifndef INCLUDED_MYLOG_H #define INCLUDED_MYLOG_H // headers -------------------------------------------------------------------- #include <string> #include <iostream> #include <fstream> #include <exception> #include <boost/program_options/detail/utf8_codecvt_facet.hpp> using namespace std; // definitions ---------------------------------------------------------------- // ---------------------------------------------------------------------------- // DblBuf class // Splits up output stream into two // Inspired by http://wordaligned.org/articles/cpp-streambufs // ---------------------------------------------------------------------------- class DblBuf : public wstreambuf { private: // private member declarations DblBuf(); wstreambuf *bf1; wstreambuf *bf2; virtual int_type overflow(int_type ch) { int_type eof = traits_type::eof(); int_type not_eof = !eof; if ( traits_type::eq_int_type(ch,eof) ) return not_eof; else { char_type ch1 = traits_type::to_char_type(ch); int_type r1( bf1on ? bf1->sputc(ch1) : not_eof ); int_type r2( bf2on ? bf2->sputc(ch1) : not_eof ); return (traits_type::eq_int_type(r1,eof) || traits_type::eq_int_type(r2,eof) ) ? eof : ch; } } virtual int sync() { int r1( bf1on ? bf1->pubsync() : NULL ); int r2( bf2on ? bf2->pubsync() : NULL ); return (r1 == 0 && r2 == 0) ? 0 : -1; } public: // public member declarations explicit DblBuf(wstreambuf *bf1, wstreambuf *bf2) : bf1(bf1), bf2(bf2) { if (bf1) bf1on = true; else bf1on = false; if (bf2) bf2on = true; else bf2on = false; } bool bf1on; bool bf2on; }; // ---------------------------------------------------------------------------- // logstream class // Wrapper for a standard wostream with access to modified buffer // ---------------------------------------------------------------------------- class logstream : public wostream { private: // private member declarations logstream(); public: // public member declarations DblBuf *buf; explicit logstream(wstreambuf *StrBuf, bool isStd = false) : wostream(StrBuf, isStd), buf((DblBuf*)StrBuf) {} }; // ---------------------------------------------------------------------------- // Logging mode Class // ---------------------------------------------------------------------------- enum LogModes{LogToFile=1, LogToScreen, LogToBoth}; class LogMode { private: // private member declarations LogMode(); short mode; public: // public member declarations LogMode(short mode1) : mode(mode1) {} logstream& operator()(logstream &stream1) { switch(mode) { case LogToFile: stream1.buf->bf1on = true; stream1.buf->bf2on = false; break; case LogToScreen: stream1.buf->bf1on = false; stream1.buf->bf2on = true; break; case LogToBoth: stream1.buf->bf1on = true; stream1.buf->bf2on = true; } return stream1; } }; logstream& operator<<(logstream &out, LogMode mode) { return mode(out); } wostream& TimeStamp1(wostream &out1) { time_t time1; struct tm timeinfo; wchar_t timestr[512]; // Get current time and convert it to a string time(&time1); localtime_s (&timeinfo, &time1); wcsftime(timestr, 512,L"[%Y-%b-%d %H:%M:%S %p] ",&timeinfo); return out1 << timestr; } // ---------------------------------------------------------------------------- // MyLog class // Logs events to both file and screen // ---------------------------------------------------------------------------- class MyLog { private: // private member declarations MyLog(); auto_ptr<DblBuf> buf; string mErrorMsg1; string mErrorMsg2; string mErrorMsg3; string mErrorMsg4; public: // public member declarations explicit MyLog(string FileName1, wostream *ScrLog1, locale utf8locale1); ~MyLog(); void NewEvent(wstring str1, bool TimeStamp = true); string FileName; wostream *ScrLog; wofstream File; auto_ptr<logstream> Log; locale utf8locale; }; // ---------------------------------------------------------------------------- // MyLog constructor // ---------------------------------------------------------------------------- MyLog::MyLog(string FileName1, wostream *ScrLog1, locale utf8locale1) : // ctors mErrorMsg1("Failed to open file for application logging! []"), mErrorMsg2("Failed to write BOM! []"), mErrorMsg3("Failed to write to file! []"), mErrorMsg4("Failed to close file! []"), FileName(FileName1), ScrLog(ScrLog1), utf8locale(utf8locale1), File(FileName1.c_str()) { // Adjust error strings mErrorMsg1.insert(mErrorMsg1.length()-1,FileName1); mErrorMsg2.insert(mErrorMsg2.length()-1,FileName1); mErrorMsg3.insert(mErrorMsg3.length()-1,FileName1); mErrorMsg4.insert(mErrorMsg4.length()-1,FileName1); // check for file open errors if ( !File ) throw ofstream::failure(mErrorMsg1); // write UTF-8 BOM File << wchar_t(0xEF) << wchar_t(0xBB) << wchar_t(0xBF); // switch locale to UTF-8 File.imbue(utf8locale); // check for write errors if ( File.bad() ) throw ofstream::failure(mErrorMsg2); buf.reset( new DblBuf(File.rdbuf(),ScrLog->rdbuf()) ); Log.reset( new logstream(&*buf) ); } // ---------------------------------------------------------------------------- // MyLog destructor // ---------------------------------------------------------------------------- MyLog::~MyLog() { *Log << TimeStamp1 << "Log finished." << endl; // clean up objects Log.reset(); buf.reset(); File.close(); // check for file close errors if ( File.bad() ) throw ofstream::failure(mErrorMsg4); } //--------------------------------------------------------------------------- #endif // INCLUDED_MYLOG_H Tested on MSVC 2008, boost 1.42. I do not know if this is the right place to share it. Hope it helps anybody. Feel free to make it better.

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