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hash function for string

...e as safe as you think--for example, IEEE floating point numbers have two different bit patterns (0 and -0) that should produce the same hashes (they'll compare as equal to each other). – Jerry Coffin Jul 15 '15 at 22:02 ...
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Is it a good practice to use an empty URL for a HTML form's action attribute? (action=“”)

I am wondering if anyone can give a "best practices" response to using blank HTML form actions to post back to the current page. ...
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Difference between dispatch_async and dispatch_sync on serial queue?

... Yes. Using serial queue ensure the serial execution of tasks. The only difference is that dispatch_sync only return after the block is finished whereas dispatch_async return after it is added to the queue and may not finished. for this code dispatch_async(_serialQueue, ^{ printf("1"); }); print...
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If threads share the same PID, how can they be identified?

...hread's "PID"), and there's where gettid(2) comes in. This way I can tell, if we're in the main thread or not. – Tomasz Gandor Nov 21 '14 at 12:40 2 ...
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java.net.URLEncoder.encode(String) is deprecated, what should I use instead?

...re static methods. It would take the same amount of effort to type either. If you like Python, why are you programming in Java? Is it because more people use Java than Python and you got a Java job instead of Python job? – stepanian Feb 27 '12 at 9:07 ...
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CSS hack大全 - 创意 - 清泛网 - 专注C/C++及内核技术

...色是金黄色,Safari和Chrome使用的都是Webkit内核</span > <!--[if IE 8]>IE8的辨别色是蓝色,新版IE8的功能可是不少呢。<![endif]--> <!--[if IE 7]>IE7的辨别色是紫色,IE7还可以凑合着用!<![endif]--> <!--[if IE 6]>IE6的辨别色是红色,不过,IE6可...
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How to see which commits in one branch aren't in the other?

... And you wouldn't know of a way to get cherry to mark or exclude equivalent commits, would you? cherry seems like a plumbing command, but doesn't (appear to) offer many options. For what I'm currently in the middle of, git cherry gives me fal...
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difference between foldLeft and reduceLeft in Scala

I have learned the basic difference between foldLeft and reduceLeft 7 Answers 7 ...
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How to keep up with the latest versions of Node.js in Ubuntu? PPA? Compiling?

... Alas it's not tight at all now... I have 0.10.12 which is being shown in Ubuntu as the latest and greatest, whereas the world has moved onto 0.10.20 – kumarharsh Oct 16 '13 at 13:47 ...
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Android OpenGL ES and 2D

...e it as an initializer parameter { /*many thanks to sprite method test if this works*/ if ( gl == null ) { Log.e(TAG, "Failed to load resource. Context/GL is NULL"); return false; } int error; int textureName = -1; gl.glGenTextures(1, texture, 0); te...