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How to count the number of set bits in a 32-bit integer?
...33333) + ((i >> 2) & 0x33333333);
return (((i + (i >> 4)) & 0x0F0F0F0F) * 0x01010101) >> 24;
}
For JavaScript: coerce to integer with |0 for performance: change the first line to i = (i|0) - ((i >> 1) & 0x55555555);
This has the best worst-case behaviour of ...
How do I loop through or enumerate a JavaScript object?
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41 Answers
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Converting a string to a date in JavaScript
...ations as UTC.
To parse a date as UTC, append a Z - e.g.: new Date('2011-04-11T10:20:30Z').
To display a date in UTC, use .toUTCString(),
to display a date in user's local time, use .toString().
More info on MDN | Date and this answer.
For old Internet Explorer compatibility (IE versions less th...
Very Long If Statement in Python [duplicate]
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According to PEP8, long lines should be placed in parentheses. When using parentheses, the lines...
MFC 获取当前时间的几种方法总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
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CString str;
str=time.Format("%H:%M %Y-%m-%d");
AfxMessageBox(str);
4.time_t（转换成秒）
SYSTEMTIME curTime;
GetLocalTime(&curTime);
struct tm tmTime;
tmTime.tm_year = curTime.wYear - 1900;
tmTime.tm_month = curTime.wMonth;
tmTime.tm_day = curTime.wDay;
tmTime.tm_hour = curTi...
setTimeout / clearTimeout problems
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Ankur Soni
4,19244 gold badges2828 silver badges5858 bronze badges
answered Jun 10 '10 at 14:30
PointyPointy
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Regex Email validation
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edited Jul 15 '14 at 17:53
Leniel Maccaferri
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Missing include “bits/c++config.h” when cross compiling 64 bit program on 32 bit in Ubuntu
...unning the 32bit version of Ubuntu 10.10 and trying to cross compile to a 64 bit target. Based on my research, I have installed the g++-multilib package.
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Algorithm to detect corners of paper sheet in photo
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John_West
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answered Jul 10 '11 at 22:47
Daniel CrowleyDaniel ...
The required anti-forgery form field “__RequestVerificationToken” is not present Error in user Regis
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answered Apr 19 '13 at 11:04
webdeveloperwebdeveloper
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