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What does the CSS rule “clear: both” do?

...gn a basic website which has a layout like below... Live Example of the demo image. Code For Demo /* CSS: */ * { /* Not related to floats / clear both, used it for demo purpose only */ box-sizing: border-box; -moz-box-sizing: border-box; -webkit-box-sizing: border-box; ...
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Trimming a huge (3.5 GB) csv file to read into R

...eel like firing up a big memory instance on Amazon's EC2 you can get up to 64GB of RAM. That should hold your file plus plenty of room to manipulate the data. If you need more speed, then Shane's recommendation to use Map Reduce is a very good one. However if you go the route of using a big memory ...
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What is the difference between String and string in C#?

...tem.UInt16 int: System.Int32 uint: System.UInt32 long: System.Int64 ulong: System.UInt64 float: System.Single double: System.Double decimal: System.Decimal char: System.Char Apart from string and object, the aliases are all to value types. decimal is a value type, but not a primi...
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Input placeholders for Internet Explorer

...ss Browser Polyfills, one I saw was jQuery-html5-placeholder. I tried the demo out with IE9, and it looks like it wraps your <input> with a span and overlays a label with the placeholder text. <label>Text: <span style="position: relative;"> <input id="placeholder13145884...
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GPU Emulator for CUDA programming without the hardware [closed]

...I've not tested it. MCUDA The MCUDA translation framework is a linux-based tool designed to effectively compile the CUDA programming model to a CPU architecture. It might be useful. Here is a link to the website. CUDA Waste It is an emulator to use on Windows 7 and 8. I've not tried it ...
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Convert .pem to .crt and .key

... format. The PEM form is the default format: it consists of the DER format base64 encoded with additional header and footer lines. On input PKCS#8 format private keys are also accepted. The NET form is a format is described in the NOTES section. -outform DER|NET|PEM This specifies the output ...
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OS X10.9 环境下部署 QT5.3.1 常见的编译问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...ork/Versions/5/QtCore Referenced from: /Users/tonyOSX/Qt5.2.1/5.2.1/clang_64/bin/uic Reason: image not found make: *** [ui_mainwindow.h] Trace/BPT trap: 5 重装Qt,问题就能解决了。也极有可能不会再出现上述两个问题。 出错的原因 我之所以在上文中对该情况...
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How to convert a string from uppercase to lowercase in Bash? [duplicate]

... Note that tr can only handle plain ASCII, making any tr-based solution fail when facing international characters. Same goes for the bash 4 based ${x,,} solution. The awk tool, on the other hand, properly supports even UTF-8 / multibyte input. y="HELLO" val=$(echo "$y" | awk '{p...
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How does C compute sin() and other math functions?

..., this is the code that actually runs when you call sin() on a typical x86-64 Linux system. It is apparently faster than the fsin assembly instruction. Source code: sysdeps/ieee754/dbl-64/s_sin.c, look for __sin (double x). This code is very complex. No one software algorithm is as fast as possible...
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How to set cookie in node js using express framework?

... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers. Draft saved Draft discarded ...