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Is there a standard sign function (signum, sgn) in C/C++?

...+ version yet: template <typename T> int sgn(T val) { return (T(0) < val) - (val < T(0)); } Benefits: Actually implements signum (-1, 0, or 1). Implementations here using copysign only return -1 or 1, which is not signum. Also, some implementations here are returning a float (or...
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How to convert a boolean array to an int array

... answered Jul 6 '13 at 19:10 BrenBarnBrenBarn 197k2727 gold badges348348 silver badges337337 bronze badges ...
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javascript: recursive anonymous function?

... answered Oct 7 '10 at 16:46 PointyPointy 359k5454 gold badges508508 silver badges567567 bronze badges ...
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HTML5: Slider with two inputs possible?

... Jarno 2,60122 gold badges2323 silver badges3939 bronze badges answered Jan 21 '11 at 0:28 Martin BuberlMartin ...
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Convert RGB to RGBA over white

...ha value. Example: 152 converts to an alpha value of (255 - 152) / 255 ~ 0.404 152 scales using (152 - 152) / 0.404 = 0 177 scales using (177 - 152) / 0.404 ~ 62 202 scales using (202 - 152) / 0.404 ~ 123 So, rgb(152, 177, 202) displays as rgba(0, 62, 123, .404). I have verified in Photoshop t...
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Delete topic in Kafka 0.8.1.1

I need to delete the topic test in Apache Kafka 0.8.1.1. 14 Answers 14 ...
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How to suppress scientific notation when printing float values?

...%f' % (x/y) but you need to manage precision yourself. e.g., '%f' % (1/10**8) will display zeros only. details are in the docs Or for Python 3 the equivalent old formatting or the newer style formatting share ...
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adito-gateway -华为云免费SSL VPN解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...l vpn之华为云软件SSL VPN解决方案1、yum install ant2.下载adito-0.9.1-bin并拷贝到 mnt目录下3....免费的SSL VPN adito-gateway ssl vpn之华为云软件SSL VPN解决方案 1、 yum install ant 2. 下载adito-0.9.1-bin 并拷贝到 /mnt目录下 3. 解压并移动到...
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Where are my postgres *.conf files?

I have recently reinstalled postgresql 8.3 on my Ubuntu 8.04 after update. Used EnterpriseDB package. I can connect to the database locally, I see system DB postgres but I can't configure it because I can't find config files. Searched through entire hard drive and found only samples like pg_hba.con...
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Circle drawing with SVG's arc path

... answered Apr 21 '11 at 0:41 Todd MainTodd Main 31k1010 gold badges7373 silver badges137137 bronze badges ...