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Difference between HEAD and master

... The simple answer is that HEAD is a pointer/label to the most recent commit of the branch you are currently on. master is the default branch created when you initialized a git repository (e.g. git init). You can delete the master branch (e.g. git branch -D master). Yo...
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How do I break out of a loop in Perl?

...If you have nested loops, then last will exit from the innermost loop. Use labels in this case: LBL_SCORE: { for my $entry1 (@array1) { for my $entry2 (@array2) { if ($entry1 eq $entry2) { # Or any condition last LBL_SCORE; } } } } ...
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How to duplicate a git repository? (without forking)

...nse. Steps: 1) In the GUI make the new repo but don't click the check box labeled "Initialize this repository with a README" After you do this Github will present you with a new page and an option labeled "…or import code from another repository." That's it! – Luke F. ...
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What is HTML5 ARIA?

... from the ARIA spec: <ul role="menubar"> <!-- Rule 2A: "File" label via aria-labelledby --> <li role="menuitem" aria-haspopup="true" aria-labelledby="fileLabel"><span id="fileLabel">File</span> <ul role="menu"> <!-- Rule 2C: "New" label via Nam...
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Why does this code using random strings print “hello world”?

... input = goal.toCharArray(); char[] pool = new char[input.length]; label: for (long seed = start; seed < finish; seed++) { Random random = new Random(seed); for (int i = 0; i < input.length; i++) pool[i] = (char) random.nextInt(27); if (random....
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程序员之网络安全系列(三):数据加密之对称加密算法 - 更多技术 - 清泛网...

...王不冒充明明?(身份认证) 如何保证明明不能否认情书是自己写的?(来源的不可否认) 上一节,我们使用了Hash算法保证了情书的完整性,也就是确保“隔壁王叔叔”没有修改明明的情书,那么这一节我们来看看如何保证...
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智能手机图形解锁有多少种可能 - 创意 - 清泛网 - 专注C/C++及内核技术

...己漏掉了一些情况,如下图中绿色的两幅,24136和654192都是可行的,也就是说:这...琢磨这个问题很久,今天还用matlab算了算,到后来才发现自己漏掉了一些情况,如下图中绿色的两幅,24136和654192都是可行的,也就是说:这个...
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IT大牛是如何炼成的 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术

IT大牛是如何炼成的记得初入公司时,写的代码乱七八糟,错误百出,bug连连,不仅项目经理骂我,其他同事也对我怨声载道。后来听朋友介绍,就报了一个培训班。 记得初入公司时,写的代码乱七八糟,错误百出,bug连连...
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BMP 和 DIB - C/C++ - 清泛网 - 专注C/C++及内核技术

...B或DIB。】 DDB位图在早期的Windows系统(Windows 3.0以前)中是很普遍的,事实上它也是唯一的。然而,随着显示器制造技术的进步,以及显示设备的多样化,DDB位图的一些固有的问题开始浮现出来了。比如,它不能够存储(或者说...
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ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注IT技能提升

...rface接口,来获得对应的正确的接口指针。CComPtr和CComQIPtr是智能接口指针类,它们在销毁的时候,不需要手动去释放接口指针,在赋值的时候,也不需要手动的AddRef,在出现异常的时候,会自动处理异常,而不需要额外的异常处...