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In MySQL, can I copy one row to insert into the same table?

... If it's null, it get automatically assigned the next AI number when it's inserted. – Grim... Dec 11 '13 at 11:08 3 ...
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How can I reverse a NSArray in Objective-C?

... For obtaining a reversed copy of an array, look at danielpunkass' solution using reverseObjectEnumerator. For reversing a mutable array, you can add the following category to your code: @implementation NSMutableArray (Reverse) - ...
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Redefine tab as 4 spaces

...ated by pressing the tab key, which would result in the file literally containing (up to) 4 space characters for each "tab" you type? Depending on your answer, one of the following sets of settings should work for you: For tab characters that appear 4-spaces-wide: set tabstop=4 If you're using...
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C++ Lock-free Hazard Pointer(冒险指针) - C/C++ - 清泛网 - 专注C/C++及内核技术

...的标记是计数数值一,对应的原子操作性能问题就成为它无法摆脱的原罪。而 Hazard Pointer 使用的标记更为轻巧,一般通过在链表中标记该对象的指针实现,回收时如果发现链表中有对应的指针就不进行内存回收,将标记的复杂...
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What does %~dp0 mean, and how does it work?

... - expands %I to a file extension only %~sI - expanded path contains short names only %~aI - expands %I to file attributes of file %~tI - expands %I to date/time of file %~zI - expands %I to size of file %~$PATH:I - searches the directories listed in the PATH ...
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Hidden features of Python [closed]

... Chaining comparison operators: >>> x = 5 >>> 1 < x < 10 True >>> 10 < x < 20 False >>> x < 10 < x*10 < 100 True >>> 10 > x <= 9 True >>> 5 == x ...
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创业测试:50个迹象表明你真该创业了 - 资讯 - 清泛网 - 专注C/C++及内核技术

...抑制的学习渴望。但是在年复一年的相同工作中,你可能无法有所收获。但是成为一名企业主,你可以拥有这种学习体验。 35.你不介意有多重任务需要处理。有些人可以同时解决几件事情。如果你是那种不会被多重任务压垮的...
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Expanding tuples into arguments

...ted May 27 at 13:31 Nicolas Gervais 13.3k77 gold badges3434 silver badges5656 bronze badges answered Jan 3 '10 at 2:24 ...
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CruiseControl.Net 进行持续化集成 - IT产品资讯 - 清泛网 - 专注C/C++及内核技术

....2918,在首页的release栏中,便可以找到下载最新版CC.Net的连接,它是一款开源软件,你也可以在http://www.sf.net中找到它的源码和安装文件。如果你就是想使用CC.Net直接下载exe文件即可。下载后,在本地的安装过程如下: 双击Cru...
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Can you control how an SVG's stroke-width is drawn?

...the inset and offset of a shape. It's not perfect (need to keep checking against latest browser versions) but it does accurately provide a shapes outer width for now. – Steve Sep 2 '11 at 10:02 ...