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Hidden Features of MySQL
...EY, UNIQUE, or INDEX will be indexed.
NULL means "not having a value". To test for NULL, you cannot use the arithmetic comparison operators such as =, <, or <>. Use the IS NULL and IS NOT NULL operators instead:
NO_AUTO_VALUE_ON_ZERO suppresses auto increment for 0 so that only NULL gene...
What's the cause of this FatalExecutionEngineError in .NET 4.5 beta? [closed]
...e-related class which needs explicit static construction.
Again, I haven't tested it, but it's my best guess at the data.
Feel free to test my hypothesis and let me know how it goes.
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UIScrollView scroll to bottom programmatically
...nclude the condition when I pasted in the code. The condition is correctly testing for what it was testing for, though.
– matt
Nov 15 '11 at 17:21
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Convert seconds to Hour:Minute:Second
...es:$seconds";
?>
which produces:
$ php file.php
0:11:25
(I've not tested this much, so there might be errors with floor or so)
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How can I render inline JavaScript with Jade / Pug?
...an example of what i'm trying to do, but it won't compile. I'm using the latest release too.
– JMWhittaker
May 2 '11 at 17:24
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Detect Retina Display
...or in iOS4.2 for the iPad: it returns 1.0 in both 1x and 2x modes. You can test this yourself in the simulator.
I test for the -displayLinkWithTarget:selector: method on the main screen which exists in iOS4.x but not iOS3.2, and then check the screen's scale:
if ([[UIScreen mainScreen] respondsToS...
How to play ringtone/alarm sound in Android
...ht not be null even though it does not point to a valid sound. You should test the return value of RingtoneManager.getRingtone() for null instead/as-well
– Attila
Jan 4 '13 at 18:07
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Maximum Length of Command Line String
... there is 32768 (I think it should be 32767, but lets believe experimental testing result) characters limitation we need to dig into Windows API.
No matter how you launch program with command line arguments it goes to ShellExecute, CreateProcess or any extended their version. These APIs basically w...
How to import a Python class that is in a directory above?
...can also cause behavioral differences on a developer's machine, be sure to test your code!
There are tools other than pip, however I'd recommend pip be the introductory one :)
I also like to make foo a "package" (a directory containing __init__.py) instead of a module (a single ".py" file), both "pa...
PHP - find entry by object property from an array of objects
...You're right about the modification and it is kind of a neat method, but I tested the speed compared to iterating through the object - yourself, because like @phil pointed out, array_filter is doing this too - and this method is taking about five times longer. My test object isn't a big one, so that...