大约有 900 项符合查询结果（耗时：0.0079秒） [XML]
Get current AUTO_INCREMENT value for any table
...answered Apr 4 '13 at 20:56
methaimethai
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How to convert a PNG image to a SVG? [closed]
...nm # PNG to PNM
potrace file.pnm -s -o file.svg # PNM to SVG
Explain options
potrace -s => Output file is SVG
potrace -o file.svg => Write output to file.svg
Example
Input file = 2017.png
convert 2017.png 2017.pnm
Temporary file = 2017.pnm
potrace 2017.pnm -s -o 2017.svg
...
How to capitalize the first letter in a String in Ruby
...want it to, it outputs мария instead of Мария.
If you're using Rails there's an easy workaround:
"мария".mb_chars.capitalize.to_s # requires ActiveSupport::Multibyte
Otherwise, you'll have to install the unicode gem and use it like this:
require 'unicode'
Unicode::capitalize("м...
Detecting iOS / Android Operating system
...dow.opera;
// Windows Phone must come first because its UA also contains "Android"
if (/windows phone/i.test(userAgent)) {
return "Windows Phone";
}
if (/android/i.test(userAgent)) {
return "Android";
}
// iOS detection from: http://stackoverflow.com/a/90...
Detect iPad users using jQuery?
...ption is incorrect as iOS apps can and do customize their user agent. The main offender here is Facebook.
Compare these user agent strings from iOS devices:
# iOS Safari
iPad: Mozilla/5.0 (iPad; CPU OS 5_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B176 Safari/7534.4...
How can I concatenate two arrays in Java?
...files where some of the facilities like those mentioned by Antti are not available.
– kvn
Feb 7 '11 at 15:46
4
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柳青：滴滴每天面临向死而生的挑战 永远热泪盈眶 - 资讯 - 清泛网 - 专注C/...
...入口处的安检森严、一丝不苟，进入滴滴之后，好像回到大学的光景。图书墙、很OPEN的咖啡间、各种PK比赛，有最牛程序员之争，也有最佳团队之斗。一个个身经百战铁军的模样，柳青几个月分享时候提到初入滴滴印象中的阿里...
通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...STL（中国系统与科技开发中心）的软件工程师。他在复旦大学获得了计算机科学专业的学士与硕士学位。目前他在 IBM SVC Agent 开发小组从事研发工作。
参考资料
参考 Linux Man Pages获取 ulimit 信息。
在 developerWorks Linux 专...
How to find the kth largest element in an unsorted array of length n in O(n)?
... i)
If i > k, return Select(G, n-k, i-k)
It's also very nicely detailed in the Introduction to Algorithms book by Cormen et al.
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Multiprocessing: How to use Pool.map on a function defined in a class?
...or p in proc]
return [p.recv() for (p, c) in pipe]
if __name__ == '__main__':
print parmap(lambda x: x**x, range(1, 5))
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