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How to change the background color of a UIButton while it's highlighted?
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30 Answers
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Is there a TRY CATCH command in Bash
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edited Feb 19 at 5:20
answered Feb 25 '14 at 9:50
Jay...
Detect Retina Display
...unning iOS4+ and if the [UIScreen mainScreen].scale property is equal to 2.0. You CANNOT assume a device is running iOS4+ if the scale property exists, as the iPad 3.2 also contains this property.
On an iPad running iOS3.2, scale will return 1.0 in 1x mode, and 2.0 in 2x mode -- even though we kno...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
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1097
Notice: Undefined variable
From the vast wisdom of the PHP Manual:
Relying on the default...
How do I concatenate const/literal strings in C?
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401
In C, "strings" are just plain char arrays. Therefore, you can't directly concatenate them with...
Sorting an array of objects in Ruby by object attribute?
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230
I recommend using sort_by instead:
objects.sort_by {|obj| obj.attribute}
Especially if attrib...
How to construct a timedelta object from a simple string
..._time import parse_time
>>> parse_time('12hr')
datetime.timedelta(0, 43200)
>>> parse_time('12hr5m10s')
datetime.timedelta(0, 43510)
>>> parse_time('12hr10s')
datetime.timedelta(0, 43210)
>>> parse_time('10s')
datetime.timedelta(0, 10)
>>>
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Custom bullet symbol for elements in that is a regular character, and not an image
...e will look something like this:
ul {
list-style: none;
margin-left: 0;
padding-left: 1em;
text-indent: -1em;
}
Either the padding or the margin needs to be set to zero, with the other one set to 1em. Depending on the “bullet” that you choose, you may need to modify this value. The ...
How to export query result to csv in Oracle SQL Developer?
I'm using Oracle SQL Developer 3.0. Trying to figure out how to export a query result to a text file (preferably CSV). Right clicking on the query results window doesn't give me any export options.
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C++, variable declaration in 'if' expression
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