大约有 43,200 项符合查询结果（耗时：0.0363秒） [XML]
How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
...
13 Answers
13
Active
...
Array Size (Length) in C#
...
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?
...
251
It removes everything after the decimal point because the bitwise operators implicitly convert t...
How to use JavaScript variables in jQuery selectors?
...
|
edited Jun 25 '15 at 5:31
answered May 5 '11 at 2:10
...
Numpy how to iterate over columns of array?
...
answered Apr 13 '12 at 21:59
tillstentillsten
11.5k33 gold badges2626 silver badges3737 bronze badges
...
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();
share
|
improve th...
Getting number of elements in an iterator in Python
...
16 Answers
16
Active
...
How to create enum like type in TypeScript?
...
144
TypeScript 0.9+ has a specification for enums:
enum AnimationType {
BOUNCE,
DROP,
}
...
Regex how to match an optional character
...
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-...
jQuery equivalent of JavaScript's addEventListener method
...
143
Not all browsers support event capturing (for example, Internet Explorer versions less than 9 ...