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What is the purpose of setting a key in data.table?

...an answer to Stack Overflow!Please be sure to answer the question. Provide details and share your research!But avoid …Asking for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips o...
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Solutions for INSERT OR UPDATE on SQL Server

... See my detailed answer to a very similar previous question @Beau Crawford's is a good way in SQL 2005 and below, though if you're granting rep it should go to the first guy to SO it. The only problem is that for inserts it's still ...
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Compelling examples of custom C++ allocators?

...l allocators can help to reduce memory fragmentation. You can find a long, detailed paper on the topic at: EASTL -- Electronic Arts Standard Template Library share | improve this answer | ...
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How do CDI and EJB compare? interact?

...an answer to Stack Overflow!Please be sure to answer the question. Provide details and share your research!But avoid …Asking for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips o...
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Find and kill a process in one line using bash and regex

...to do: kill $(ps aux | grep '[p]ython csp_build.py' | awk '{print $2}') Details on its workings are as follows: The ps gives you the list of all the processes. The grep filters that based on your search string, [p] is a trick to stop you picking up the actual grep process itself. The awk just g...
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CALayer with transparent hole in it

...h event: UIEvent?) -> Bool {} of UIView. Check out his library for more details. But, what you expect is just 'visibility to what is behind the mask', this is a valid answer. – infinity_coding7 Oct 10 '18 at 15:57 ...
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What's the difference between Spring Data's MongoTemplate and MongoRepository?

...pository (as documented here). For the implementation use MongoTemplate. Details For your example this would look something like this: Define an interface for your custom code: interface CustomUserRepository { List<User> yourCustomMethod(); } Add an implementation for this class and ...
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Set environment variables on Mac OS X Lion

... You should see the new path appended to the end of the PATH I got these details from this post: http://architectryan.com/2012/10/02/add-to-the-path-on-mac-os-x-mountain-lion/#.UkED3rxPp3Q I hope that can help someone else ...
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Android map v2 zoom to show all the markers

...can wait for this to happen using the addOnGlobalLayoutListener construct. Details can be found in comments to this answer and remaining answers. You can also find a complete code for setting map extent using addOnGlobalLayoutListener here. Clarification 2 One comment notes that using this method ...
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How to handle dependency injection in a WPF/MVVM application

...the static service locator, by letting Ninject instantiate UI classes. The details of the answer can be seen here share | improve this answer | follow | ...