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When should I use malloc in C and when don't I?
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How to define multiple name tags in a struct
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How do you write a migration to rename an ActiveRecord model and its table in Rails?
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How does lock work exactly?
...n the way you lock. You can find a good list of optimizations here: http://www.thinkingparallel.com/2007/07/31/10-ways-to-reduce-lock-contention-in-threaded-programs/
Basically you should try to lock as little as possible, since it puts your waiting code to sleep. If you have some heavy calculation...
Undock Chrome Developer Tools
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SQL command to display history of queries
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You can look at the query cache: http://www.databasejournal.com/features/mysql/article.php/3110171/MySQLs-Query-Cache.htm but it might not give you access to the actual queries and will be very hit-and-miss if it did work (subtle pun intended)
But MySQL Query Brow...
Memory management in Qt?
...ter. The following article describes various smart pointers in Qt.
https://www.qt.io/blog/2009/08/25/count-with-me-how-many-smart-pointer-classes-does-qt-have
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Office在线预览及PDF在线预览的实现方式大集合 - 更多技术 - 清泛网 - 专注...
...结是要硬盘空间呢还是要CPU的资源。
参考链接：
http://www.cnblogs.com/expectszc/archive/2012/04/04/2432149.html
http://www.cnblogs.com/liuning8023/archive/2013/03/04/2943482.html
http://www.cxyclub.cn/n/29549/
非微软方：没有微软的Office软件可安装，只能用...
Is it possible to embed animated GIFs in PDFs?
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You can use Tikz/pgfplots for creating animations in beamer. http://www.texample.net/tikz/examples/tag/animations/
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Handling Dialogs in WPF with MVVM
...ow and handles showing and hiding the dialog. You can find it here: http://www.codeproject.com/KB/WPF/XAMLDialog.aspx
It's really simply to use and doesn't require any strange changes to your ViewModel and doesn't require events or messages. The basic call looks like this:
<dialog:Dialog Conte...