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Search found 243 results on 10 pages for 'user198729'.

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• What's the magic function for empty() in PHP?

  - by user198729

  It should not be __isset,because isset() is not the same thing as empty()

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• MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'

  - by user198729

  SELECT u.id AS u__id, u.username AS u__username, p.id AS p__id, p.phonenumber AS p__phonenumber, p.user_id AS p__user_id FROM user u INNER JOIN phonenumber p ON u.id = p.user_id WHERE u.id IN (SELECT DISTINCT u2.id FROM user u2 INNER JOIN phonenumber p2 ON u2.id = p2.user_id LIMIT 20) This query is from here: http://www.doctrine-project.org/documentation/manual/1_2/en/dql-doctrine-query-language It's supposed to work on all DBMS ,but not in fact

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• Why does it NOT give a segmentation violation?

  - by user198729

  The code below is said to give a segmentation violation: #include <stdio.h> #include <string.h> void function(char *str) { char buffer[16]; strcpy(buffer,str); } int main() { char large_string[256]; int i; for( i = 0; i < 255; i++) large_string[i] = 'A'; function(large_string); return 1; } It's compiled and run like this: gcc -Wall -Wextra hw.cpp && a.exe But there is nothing output. NOTE The above code indeed overwrites the ret address and so on if you really understand what's going underneath.

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• Does white color has a fixed value(1 IMO) in an RGB image in MATLAB?

  - by user198729

  Or say does 1 denotes white for an RGB image? I have this question because of this answer: http://stackoverflow.com/questions/2619668/how-to-convert-a-grayscale-matrix-to-an-rgb-matrix-in-matlab/2619714#2619714 Can someone clarify it?

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• What if an application needs MSVCR80.dll but I've installed Microsoft Visual Studio 9.0?

  - by user198729

  I'm trying to install this: http://www.coderholic.com/pywebshot-generate-website-thumbnails-using-python/ I've googled a lot,and still can't make it work(gtk runtime has been installed successfully(gtk-demo works),but it still reports can't find MSVCR80.dll,this should be because that I have installed Microsoft Visual Studio 9.0?), each time it reports ImportError: DLL load failed,MSVCR80.dll is not found.. How to make an application that needs MSVCR80.dll work when I've already installed Microsoft Visual Studio 9.0? Or : How to make _gtk.pyd use MSVCR90.dll instead of MSVCR80.dll?

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• Is there an api to add a prefix to array keys in PHP?(batch)

  - by user198729

  func($arr); The result should be array('prefix'.$k => ..) Is there?

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• Is it good practice to set non-standard html attributes?

  - by user198729

  I find it very convenient to set arbitary attributes like: <a stackoverflowId="123">.. And in JavaScript: var soId = $selectofA.attr('stackoverflowId'); //jQuery Is it a good practice at all? I've never had a problem with this yet.

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• What is utf8 BOM and how to convert the all source files into utf8 without BOM in visual c++ 2008?

  - by user198729

  It is really annoying,causing errors like this: error C2018: unknown character '0x40' How do I start a batch processing?

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• How to understand the output of groups command?

  - by user198729

  [root@xxx~]# groups root root : root bin daemon sys adm disk wheel Does it mean that a user root belongs to 7 groups?

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• Javascript timezone solution needed(taking into account the actual difference in UTC timestamps)

  - by user198729

  I have unix timestamps from time zone X which is not known, the current timestamp(now()) in TZ X is known 1275143019, how to approach a javascript function so that it can generate the datetime in the users current TZ in the format 2010-05-29 15:32:35 ? UPDATE I'm not a unix timestamp expert,if unix timestamp is always the same in different TZ, then I have to change the question a little,so that the current datetime in TZ X is known(like 2010-05-29 22:32:28),and the other datetime is also in this format,how to convert them to the user's TZ based on the difference between now() ? UPDATE Something strange from MySQL: On server: mysql> select now(); +---------------------+ | now() | +---------------------+ | 2010-05-29 18:34:30 | +---------------------+ 1 row in set (0.00 sec) mysql> select UNIX_TIMESTAMP(); +------------------+ | UNIX_TIMESTAMP() | +------------------+ | 1275143674 | +------------------+ 1 row in set (0.00 sec) On local: mysql> select now(); +---------------------+ | now() | +---------------------+ | 2010-05-29 22:41:30 | +---------------------+ 1 row in set (0.00 sec) mysql> select UNIX_TIMESTAMP(); +------------------+ | UNIX_TIMESTAMP() | +------------------+ | 1275144091 | +------------------+ 1 row in set (0.00 sec) Why the difference between now() (2010-05-29 22:41:30-2010-05-29 18:34:30=6hours) and UNIX_TIMESTAMP() (1275144091 - 1275143674 = 417seconds) is not the same ?

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• Why do I get a "warning: no newline at end of file" ?

  - by user198729

  The file is a helloworld.cpp: #include <iostream> using namespace std; int main() { if(true) cout << "!!!Hello World!!!" << endl; // prints !!!Hello World!!! return 0; } But when I build it,get a warning: g++ -Wall -O2 -c -o hw.o hw.cpp hw.cpp:8:2: warning: no newline at end of file g++ -o myprog hw.o If I add a newline at the end,the warning will go. Why is that newline at end of file recommended in a cpp source file?

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• How do I use graythresh on an indexed image in MATLAB?

  - by user198729

  I = imread('coins.png'); level = graythresh(I); BW = im2bw(I,level); imshow(BW) The above is an example from the MATLAB documentation using a grayscale image. How can I make it work with an indexed image like in this post?

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• About the signature: int WINAPI WinMain (HINSTANCE p1, HINSTANCE p2, LPSTR p3, int p4)

  - by user198729

  Why can WinMain have two return types? If I remove it,will report this warning: warning C4007: 'WinMain' : must be '__stdcall' Or I'm reading int WINAPI wrongly?

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• How do I load and show a PNG image in MATLAB?

  - by user198729

  >> I = imread('D:\Works\matlab\SecCode.php.png','png'); >> imshow(I); The above code always shows an all-black image. What's wrong with it? The image I'm using is this one:

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• What's the difference between unsigned long/long/int in c/c++?

  - by user198729

  It seems all of them take 4 bytes of space, so what's the difference?

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• IE will ignore javascript files included that's using a different encoding ?

  - by user198729

  Is this true? Anyone experienced this?

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• Is there a short key for desk top in windows batch?

  - by user198729

  C:\Documents and Settings\Administrator\Desktop I don't want to type the above each time to refer to a file on the desktop

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• How to make disconnected closed curves connected by adding a shortest path using MATLAB?

  - by user198729

  bwlabel can be used to get disconnected objects in an image: [L Ne] = bwlabel(image); I want to make the objects(But my target is only the contours(closed curve) of these objects) connected by adding a shortest path where necessary. How do I approach this? UPDATE Or how to dilate the closed curves so that they get connected? How to calculate the shortest path between two disconnected closed curves?

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• How are jsp pages executed,what's the principle in it?

  - by user198729

  I'm reading the steps to build a web app skeleton: http://maestric.com/doc/java/spring/setup#web_app_skeleton And feel it's greatly different from other languages like PHP. How is it executed?

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• Can eclipse be used to fully replace ant?

  - by user198729

  I don't want to build the files manually with command line, is it possible for eclipse to do the equivalent for tomcat automatically?

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• How to construct a string based on regex and related parameters in PHP?

  - by user198729

  (?P<id>\d*)(/(?P<title>.*))? Most of the time,we use regex to match something,but how to generate the matching string if we have id and title already? Example,if id=4 and title='hello world',the result should be: 4/hello world But if we only have id=4,it should be: 4 Because as the regex indicates,title is optional. Two answers both misunderstood... There is no preg_match yet

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• So functions/methods in PHP are case insensitive?

  - by user198729

  function ag() { echo '2'; } Ag(); class test { function clMe() { echo 'hi'; } } $instance = new test; $instance->clme(); But that's the not case with variables, what's the rationale in it?

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• Does the return value of a MATLAB function depend on how it's called?

  - by user198729

  A = imread(filename, fmt) [X, map] = imread(...) The above is in the synopsis part of imread, which seems to say that the return value of a MATLAB function depends on how it's called? Is that true?

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• Is this pdo bug fixed now?

  - by user198729

  Note that you can specify a port number with "port=####", but this port number will be ignored if the host is localhost. If you want to connect to a local port other than the default, use host=127.0.0.1 instead of localhost. Quoted from this page,has anyone verified if it has been fixed?

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• Escaping textarea content

  - by user198729

  <textarea><?php echo htmlspecialchars($content)?></textarea> Does content inside <textarea need to be converted into HTML entities? Is htmlspecialchars necessary here? I tried with and without it, and both work for the content I used.

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