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Why would I ever use push_back instead of emplace_back?

... the destructor will attempt to call delete on that pointer, which was not allocated by new because it is just a stack object. This leads to undefined behavior. This is not just invented code. This was a real production bug I encountered. The code was std::vector<T *>, but it owned the conten...
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How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?

...st make sure your pointers are still valid after the delay (ie. no objects allocated on stack). share | improve this answer | follow | ...
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What are the mechanics of short string optimization in libc++?

... minus 2 bytes to store a short string (i.e. largest capacity() without an allocation). On a 32 bit machine, 10 chars will fit in the short string. sizeof(string) is 12. On a 64 bit machine, 22 chars will fit in the short string. sizeof(string) is 24. A major design goal was to minimize sizeof(...
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How do you create optional arguments in php?

In the PHP manual, to show the syntax for functions with optional parameters, they use brackets around each set of dependent optional parameter. For example, for the date() function, the manual reads: ...
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.htaccess: Invalid command 'RewriteEngine', perhaps misspelled or defined by a module not included i

I have this error when trying to browse php files locally 8 Answers 8 ...
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Does JavaScript have a method like “range()” to generate a range within the supplied bounds?

In PHP, you can do... 62 Answers 62 ...
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How to enable NSZombie in Xcode?

... Doesnt break on the call to the deallocated object on device, any way to make that happen? – jjxtra Oct 21 '11 at 15:31 95 ...
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MFC CListCtrl使用方法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术

...生类 http://www.codeguru.com/cpp/controls/listview/introduction/article.php/c919/ 20. listctrl的subitem添加图标 m_list.SetExtendedStyle(LVS_EX_SUBITEMIMAGES); m_list.SetItem(..); //具体参数请参考msdn 21. 在CListCtrl显示文件,并根据文件类型来显...
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FileNotFoundException while getting the InputStream object from HttpURLConnection

...tainer of the service happens to be me! .. Well I tried doing a curl using php and it returns 200 (have edited my question) Also tried getErrorStream() as suggested. It throws a NullPointerException on new InputStreamReader(con.getErrorStream()). – naiquevin Ma...
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User recognition without cookies or local storage

...ce to increase the accuracy of your results. The NeuralMesh library for PHP allows you to generate Artificial Neural Networks. To implement Bayesian Inference, check out the following links: Implement Bayesian inference using PHP, Part 1 Implement Bayesian inference using PHP, Part 2 Implement ...