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SQL - many-to-many table primary key

...ving a primary key on (col1,col2) is guaranteed unique (assuming your col1 and col2 values in the referenced tables are unique) and a separate index on (col2,col1) will catch those cases where the opposite order would execute faster. The surrogate is a waste of space. You won't need indexes on the ...
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Automatically add all files in a folder to a target using CMake?

...atform project from separate build management systems in Visual C++, XCode and makefiles to CMake. 4 Answers ...
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How to remove focus without setting focus to another control?

I like my UIs to be intuitive; each screen should naturally and unobtrusively guide the user on to the next step in the app. Barring that, I strive to make things as confusing and confounding as possible. ...
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How to count total number of watches on a page?

...rilem for pointing out this answer was missing the $isolateScope searching and the watchers potentially being duplicated in his/her answer/comment. Thanks to Ben2307 for pointing out that the 'body' may need to be changed. Original I did the same thing except I checked the data attribute of the ...
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Open firewall port on CentOS 7

I am using CentOS 7 and I have to ensure that ports 2888 and 3888 are open. 12 Answers ...
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Creating threads - Task.Factory.StartNew vs new Thread()

I am just learning about the new Threading and Parallel libraries in .Net 4 4 Answers ...
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Change a Rails application to production

... How to setup and run a Rails 4 app in Production mode (step-by-step) using Apache and Phusion Passenger: Normally you would be able to enter your Rails project, rails s, and get a development version of your app at http://something.com:3...
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Remove an item from a dictionary when its key is unknown

...re currently testing for object identity (is only returns True if both operands are represented by the same object in memory - this is not always the case with two object that compare equal with ==). If you are doing this on purpose, then you could rewrite your code as some_dict = {key: value for k...
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Difference between final static and static final

... @Annotation public protected private static final transient volatile And for methods: @Annotation public protected private abstract static final synchronized native strictfp share | impro...
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“Remote System Explorer Operation” causing freeze for couple of seconds

...build order Select RemoteSystemsTempFiles Click Remove Project Click Apply and Close share | improve this answer | follow | ...