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Checking for NULL pointer in C/C++ [closed]
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206
In my experience, tests of the form if (ptr) or if (!ptr) are preferred. They do not depend on ...
Symbol for any number of any characters in regex?
...ace or any non-whitespace) as many times as possible down to and including 0.
[\s\S]*
This expression will match as few as possible, but as many as necessary for the rest of the expression.
[\s\S]*?
For example, in this regex [\s\S]*?B will match aB in aBaaaaB. But in this regex [\s\S]*B will...
Compare integer in bash, unary operator expected
... specifying a default value for $i if $i is blank, as follows:
if [ "${i:-0}" -ge 2 ] ; then ...
This will substitute the value 0 instead of $i is $i is undefined. I still maintain the quotes because, again, if $i is a bunch of blanks then it does not count as undefined, it will not be replaced ...
Check if a number has a decimal place/is a whole number
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20 Answers
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Check variable equality against a list of values
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CSS: transition opacity on mouse-out?
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202
You're applying transitions only to the :hover pseudo-class, and not to the element itself.
.i...
How do I convert a PDF document to a preview image in PHP? [closed]
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10 Answers
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How to get a number of random elements from an array?
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edited Feb 20 '18 at 17:21
answered Oct 9 '13 at 10:52
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UILabel is not auto-shrinking text to fit label size
...tting this property, minimumScaleFactor MUST be set too (a good default is 0.5).
Swift
var adjustsFontSizeToFitWidth: Bool { get set }
Objective-C
@property(nonatomic) BOOL adjustsFontSizeToFitWidth;
A Boolean value indicating whether spacing between letters should be adjusted to fit the string w...
DbArithmeticExpression arguments must have a numeric common type
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edited Dec 14 '17 at 11:03
community wiki
7 r...