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PHP: How to use array_filter() to filter array keys?
...lue and the key passed to your filter function. Here's a contrived example based upon the first, but note that I'd not recommend encoding filtering rules using $allowed this way:
$my_array = ['foo' => 1, 'bar' => 'baz', 'hello' => 'wld'];
$allowed = ['foo' => true, 'bar' => true, 'h...
MySQL - Make an existing Field Unique
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Is there a way to tell it to delete rows based on a certain criteria? Or would you need to do some preprocessing before the ALTER to get this done.
– corsiKa
Feb 18 '11 at 5:54
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Align button at the bottom of div using CSS
...on:relative the button will be moved from its original position instead of based on the parent.
– Kokos
Jun 27 '17 at 13:18
1
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A weighted version of random.choice
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This should be the new answer based on the performance improvement that @AntonCodes reported.
– Wayne Workman
Jun 22 at 3:56
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Is there any way to check if iOS app is in background?
...App delegate gets callbacks indicating state transitions. You can track it based on that.
Also the applicationState property in UIApplication returns the current state.
[[UIApplication sharedApplication] applicationState]
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PHP Fatal error: Cannot redeclare class
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@Timo Based on benchmarks I've looked at, there will only be a noticeable difference of about 1 second if you have a file with 100,000 include_once's. You would be better off optimizing your DB access or other logic than premature...
How to go back in Eclipse?
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Keyboard bindings can change based on your OS and current Keys Scheme. So the best way to know a keyboard binding is to look up its Command in Preferences > Keys. That is also where you can change or add a keyboard binding.
Which means instead of ask...
`elif` in list comprehension conditionals
...the language. Since Guido van Rossum explicitly designed it as a statement-based language, he firmly resisted for a long time (tertiary expressions, and particularly their abuse, are sources of much obscurity in code). When he finally succumbed, he announced he had deliberately chosen a syntax that ...
Why must jUnit's fixtureSetup be static?
... it static causes all sorts of problems if you use Junit to execute DBUnit based DAO integration tests. The static requirement interferes with dependency injection, application context access, resource handling, logging, and anything that depends on "getClass".
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How can I get the browser's scrollbar sizes?
... The idea is genius, I'm definitely making a MooTools class based on this.
– Ryan Florence
Jun 12 '09 at 14:40
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