大约有 47,000 项符合查询结果（耗时：0.0609秒） [XML]
Check if the number is integer
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answered Aug 13 '10 at 13:18
JamesJames
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Check if string matches pattern
...ough.
– CrazyCasta
Nov 11 '16 at 20:10
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Can I assume (bool)true == (int)1 for any C++ compiler?
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edited Apr 27 '10 at 21:14
Joe
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an...
Shell equality operators (=, ==, -eq)
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And a mistaken string comparison can produce the complete wrong answer. '10' is lexicographically less than '2', so a string comparison returns true or 0. So many are bitten by this bug:
$ [[ 10 < 2 ]]; echo $?
0
vs the correct test for 10 being arithmetically less than 2:
$ [[ 10 -lt 2 ]];...
Canvas width and height in HTML5
...1;
ctx.strokeStyle = '#f00';
ctx.fillStyle = '#eff';
ctx.fillRect( 10.5, 10.5, 20, 20 );
ctx.strokeRect( 10.5, 10.5, 20, 20 );
ctx.fillRect( 40, 10.5, 20, 20 );
ctx.strokeRect( 40, 10.5, 20, 20 );
ctx.fillRect( 70, 10, 20, 20 );
ctx.strokeRect( 70, 10, 20, 20 );
ctx.strokeStyle =...
Why is === faster than == in PHP?
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answered Mar 8 '10 at 13:16
meder omuralievmeder omuraliev
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How to initialise memory with new operator in C++?
...ut it actually has special syntax for value-initializing an array:
new int[10]();
Note that you must use the empty parentheses — you cannot, for example, use (0) or anything else (which is why this is only useful for value initialization).
This is explicitly permitted by ISO C++03 5.3.4[expr.new]...
Preferred way of loading resources in Java
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answered Oct 5 '10 at 8:48
Michael WilesMichael Wiles
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If table exists drop table then create it, if it does not exist just create it
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edited Oct 10 '15 at 16:26
Junior Mayhé
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Correctly determine if date string is a valid date in that format
...teDate('2012-2-9'));
– reignsly
Jun 10 '15 at 5:59
4
The function works correctly. It returned fa...