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Difference between “!==” and “==!” [closed]
Yesterday I stumbled over this when I modified m>PHP m> code written by someone else. I was baffled that a simple comparison ( if ($var ==! " ") ) didn't work as m>ex m>pected. After some testing I realized that whoever wrote that code used ==! instead of !== as comparison operator. I've never seen ==! ...
WebSocket with SSL
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When and why I should use session_regenerate_id()?
Why and when should I use the session_regenerate_id() function in m>php m>?
Should I always use it after I use the session_start() ?
I've read that I have to use it to prevent session fixation, is this the only reason?
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Suppress Scientific Notation in Numpy When Creating Array From Nested List
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Python Force-suppress all m>ex m>ponential notation when printing numpy ndarrays, wrangle tm>ex m>t justification, rounding and print options:
What follows is an m>ex m>planation for what is going on, scroll to bottom for code demos.
Passing parameter suppress=Tru...
What is the maximum depth of the java call stack?
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What is the purpose of Node.js module.m>ex m>ports and how do you use it?
What is the purpose of Node.js module.m>ex m>ports and how do you use it?
12 Answers
12
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Echo equivalent in PowerShell for script testing
...race m>ex m>ecution of a script? Write-Output has a weird side-effect where the content of the last call to Write-Output will be left on the stack, overriding any variable you attempt to m>ex m>plicitly return from a function. Side-effects like that feel like an awfully screwy way for a language to behave.
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Chrome DevTools Devices does not detect device when plugged in
...our computer starts (if you've been following my instructions m>ex m>actly, the content of the .bat file you'll need to create will be c:\platform-tools\adb devices).
If you now have difficult accessing a URL (e.g. 'localhost') that
you're sending to Chrome on your Android device (via the Chrome d...
MySQL, Check if a column m>ex m>ists in a table with SQL
...his works well for me.
SHOW COLUMNS FROM `table` LIKE 'fieldname';
With m>PHP m> it would be something like...
$result = mysql_query("SHOW COLUMNS FROM `table` LIKE 'fieldname'");
$m>ex m>ists = (mysql_num_rows($result))?TRUE:FALSE;
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Difference between ref and out parameters in .NET [duplicate]
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Also, out parameters must be set during the m>ex m>ecution of the callee before returning to the caller, which is in opposition to ref, which must be set by the caller before calling the callee.
– Jesse C. Slicer
Feb 5 '10 at 20:18
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