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Will strlen be calculated multiple times if used in a loop condition?

...optimiser might be able to deduce that the value won't change, but I personally wouldn't rely on that. I'd do something like for (int i = 0, n = strlen(ss); i < n; ++i) or possibly for (int i = 0; ss[i]; ++i) as long as the string isn't going to change length during the iteration. If it mi...
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How to know/change current directory in Python shell?

...nswer. – wal-o-mat Nov 23 '11 at 20:16 Do I have to set PYTHONPATH in the Windows command line or in the Python shell?...
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The difference between fork(), vfork(), exec() and clone()

...d I expected there to be a huge amount of information on this, but there really wasn't any solid comparison between the four calls. ...
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JavaScript post request like a form submit

...at answer. – emragins Oct 20 '15 at 16:41 3 amazing this is not natively supported either by html...
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整合phpcms v9和discuz X3.2实现同步登陆、退出免激活 - 更多技术 - 清泛网...

...、退出免激活 首先,初学者请先查看视频教程《phpcms_v9与ucenter整合屏幕录制资料》,介绍了详细的操作步骤,简单易懂。 原理:phpcms中的phpsso类似于康盛的ucenter软件,也是一个整合多系统同步通信的解决方案,不过这里...
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PHP array delete by value (not key)

... Well, deleting an element from array is basically just set difference with one element. array_diff( [312, 401, 15, 401, 3], [401] ) // removing 401 returns [312, 15, 3] It generalizes nicely, you can remove as many elements as you like at the same time, if you want. ...
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Original purpose of ? [closed]

...purpose today because HTTP as we know it today is still, at least fundamentally, a stateless protocol. This use case was actually first described in HTML 3.2 (I'm surprised HTML 2.0 didn't include such a description): type=hidden These fields should not be rendered and provide a means for servers t...
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How to return an array from JNI to Java?

...th the JNI function NewObjectArray(). From the perspective of JNI, that's all a two dimensional array is, an object array containing a number of other inner arrays. The following for loop creates the inner arrays which are of type int[] using the JNI function NewIntArray(). If you just wanted t...
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How can I deploy an iPhone application from Xcode to a real iPhone device?

... do this a lot, be sure to check the other answers - you can make XCode do all the job to you but it's a troublesome procedure to trick it on doing that. – cregox Apr 16 '11 at 16:06 ...
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windows service vs scheduled task

...ust need to figure out how to support failover... Original Answer: I'm really not a fan of Windows Scheduler. The user's password must be provided as @moodforall points out above, which is fun when someone changes that user's password. The other major annoyance with Windows Scheduler is that it r...