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How to use JavaScript variables in jQuery selectors?
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edited Jun 25 '15 at 5:31
answered May 5 '11 at 2:10
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Array Size (Length) in C#
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152
If it's a one-dimensional array a,
a.Length
will give the number of elements of a.
If b is...
What does ~~ (“double tilde”) do in Javascript?
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251
It removes everything after the decimal point because the bitwise operators implicitly convert t...
Numpy how to iterate over columns of array?
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answered Apr 13 '12 at 21:59
tillstentillsten
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How to find difference between two Joda-Time DateTimes in minutes
...ou the difference between two DateTime objects in milliseconds:
DateTime d1 = new DateTime();
DateTime d2 = new DateTime();
long diffInMillis = d2.getMillis() - d1.getMillis();
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Getting number of elements in an iterator in Python
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How to create enum like type in TypeScript?
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144
TypeScript 0.9+ has a specification for enums:
enum AnimationType {
BOUNCE,
DROP,
}
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How do I calculate the normal vector of a line segment?
Suppose I have a line segment going from (x1,y1) to (x2,y2). How do I calculate the normal vector perpendicular to the line?
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jQuery equivalent of JavaScript's addEventListener method
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143
Not all browsers support event capturing (for example, Internet Explorer versions less than 9 ...
Regex how to match an optional character
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Use
[A-Z]?
to make the letter optional. {1} is redundant. (Of course you could also write [A-Z]{0,1} which would mean the same, but that's what the ? is there for.)
You could improve your regex to
^([0-9]{5})+\s+([A-Z]?)\s+([A-Z])([0-9]{3})([0-9]{3})([A-Z]{3})([A-...