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Conditional Variable vs Semaphore

When should one use a semaphore and when should one use a conditional variable (CondVar) ? 6 Answers ...
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Understanding reference counting with Cocoa and Objective-C

I'm just beginning to have a look at Objective-C and Cocoa with a view to playing with the iPhone SDK. I'm reasonably comfortable with C's malloc and free concept, but Cocoa's references counting scheme has me rather confused. I'm told it's very elegant once you understand it, but I'm just not o...
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Are memory leaks ever ok? [closed]

...ever OK to do this?" but rather "Is there ever a good reason to do this?" And "hunting down that memory leak is a pain" isn't a good reason. I like to keep things simple. And the simple rule is that my program should have no memory leaks. That makes my life simple, too. If I detect a memory lea...
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Disable Interpolation when Scaling a

...ords, this has everything to do with interpolation of scaled elements , and nothing to do with antialiasing of graphics being drawn on a canvas. I'm not concerned with how the browser draws lines; I care about how the browser renders the canvas element itself when it is scaled up. ...
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GitHub: Permission denied (publickey). fatal: The remote end hung up unexpectedly

...rmission ( /home/user/git) it will work fine. (Explanation: Running a command as superuser will not work with the same public key as running a command as user. Therefore Github refused the connection.) This solution requires a SSH key already to be set up: https://help.github.com/articles/generat...
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How to convert timestamps to dates in Bash?

I need a shell command or script that converts a Unix timestamp to a date. The input can come either from the first parameter or from stdin, allowing for the following usage patterns: ...
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How many threads can a Java VM support?

... OS, on what other processes are doing, on what Java release you're using, and other factors. I've seen a Windows server have > 6500 Threads before bringing the machine down. Most of the threads were not doing anything, of course. Once the machine hit around 6500 Threads (in Java), the whole m...
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How do I delete a local repository in git? [duplicate]

I can't find the command. I tried Googling "git 'delete a repository'". 4 Answers 4 ...
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Stopping python using ctrl+c

I have a python script that uses threads and makes lots of HTTP requests. I think what's happening is that while a HTTP request (using urllib2) is reading, it's blocking and not responding to Ctrl C to stop the program. Is there any way around this? ...
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What happens to a detached thread when main() exits?

Assume I'm starting a std::thread and then detach() it, so the thread continues executing even though the std::thread that once represented it, goes out of scope. ...