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How to tell if UIViewController's view is visible
I have a tab bar application, with many views. Is there a way to know if a particular UIViewController is currently visible from within the UIViewController ? (looking for a property)
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Returning JSON from a PHP Script
...$data = /** whatever you're serializing **/;
header('Content-Type: application/json');
echo json_encode($data);
If I'm not using a particular framework, I usually allow some request params to modify the output behavior. It can be useful, generally for quick troubleshooting, to not send a header, o...
How to change bower's default components folder?
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Create a Bower configuration file .bowerrc in the project root (as opposed to your home directory) with the content:
{
"directory" : "public/components"
}
Run bower install again.
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What exactly can cause an “HIERARCHY_REQUEST_ERR: DOM Exception 3”-Error?
...y does it relate to jQuery? I know the library uses native javascript functions internally, but what exactly is it trying to do whenever such a problem appears?
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How to define a function in ghci across multiple lines?
I'm trying to define any simple function that spans multiple lines in ghci, take the following as an example:
7 Answers
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How to activate an Anaconda environment
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$ source activate py33
More info:
https://groups.google.com/a/continuum.io/forum/#!topic/anaconda/8T8i11gO39U
Does `anaconda` create a separate PYTHONPATH variable for each new environment?
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When should I use nil and NULL in Objective-C?
..., they are exactly equal, you can send messages to both nil and to NULL. Idiomatically though nil is usually used to represent an object
– cobbal
Oct 14 '09 at 5:43
41
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TypeScript sorting an array
...issue I ran into with typescript. It was treating an inline Boolean expression as whatever the first value's type was instead of the complete expression.
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How to convert Set to String[]?
... end up to be less efficient.
See also the source code of AbstractCollection#toArray().
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MySQL check if a table exists without throwing an exception
...able exists in MySQL (preferably via PDO in PHP) without throwing an exception. I do not feel like parsing the results of "SHOW TABLES LIKE" et cetera. There must be some sort of boolean query?
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