大约有 23,000 项符合查询结果(耗时:0.0225秒) [XML]

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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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What is a reasonable length limit on person “Name” fields?

...e Marguerite LaFleche" (39-bytes-length). – user1154664 Nov 3 '12 at 20:51 ...
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Table overflowing outside of div

...ths in <col>s or on the first row's <td>s (vs. letting it flow based on text size). From MDN: "fixed: Table and column widths are set by the widths of table and col elements or by the width of the first row of cells. Cells in subsequent rows do not affect column widths." ...
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How do I list the functions defined in my shell?

... question and its answer because I wanted the same, I wrote the following (based on "The Archetypal Paul's declare" answer) to give me ultimately what I was after: a formatted list of both aliases and functions: function functionaliaslist() { echo echo -e "\033[1;4;32m""Functions:""\033[0;34...
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Store images in a MongoDB database

How can I store images in a MongoDB database rather than just text? Can I create an array of images in a MongoDB database? Will it be possible to do the same for videos? ...
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Command-line Tool to find Java Heap Size and Memory Used (Linux)?

...ample output of the VM overview mode: JvmTop 0.3 alpha (expect bugs) amd64 8 cpus, Linux 2.6.32-27, load avg 0.12 http://code.google.com/p/jvmtop PID MAIN-CLASS HPCUR HPMAX NHCUR NHMAX CPU GC VM USERNAME #T DL 3370 rapperSimpleApp 165m 455m 109m 176m 0.12% 0.00% S6U37...
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Clear file cache to repeat performance testing

... Works perfectly for me under Windows 7 SP1, x64. Great tip! – cxxl Oct 22 '12 at 16:26 2 ...
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get CSS rule's percentage value in jQuery

... A jQuery plugin based on Adams answer: (function ($) { $.fn.getWidthInPercent = function () { var width = parseFloat($(this).css('width'))/parseFloat($(this).parent().css('width')); return Math.round(100*width)+'%'; ...
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How do I convert dates in a Pandas data frame to a 'date' data type?

...3-01-02 2 3 2013-01-03 In [32]: df['time'] = df['time'].astype('datetime64[ns]') In [33]: df Out[33]: a time 0 1 2013-01-01 00:00:00 1 2 2013-01-02 00:00:00 2 3 2013-01-03 00:00:00 share |...
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How to increase IDE memory limit in IntelliJ IDEA on Mac?

...k like: -Xms128m -Xmx2048m -XX:MaxPermSize=350m -XX:ReservedCodeCacheSize=64m -XX:+UseCodeCacheFlushing -XX:+UseCompressedOops Copying the original file is important, as options are not added, they are replaced. This way your custom options will be preserved between updates and application files...