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What are 'closures' in .NET?

What is a closure ? Do we have them in .NET? 11 Answers 11 ...
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Checking images for similarity with OpenCV

Does OpenCV support the comparison of two images, returning some value (maybe a percentage) that indicates how similar these images are? E.g. 100% would be returned if the same image was passed twice, 0% would be returned if the images were totally different. ...
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What does the Subversion status symbol “~” mean?

I am getting a tilde symbol when I do an svn status . 11 Answers 11 ...
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How important is the order of columns in indexes?

I've heard that you should put columns that will be the most selective at the beginning of the index declaration. Example: ...
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Do the JSON keys have to be surrounded by quotes?

Example: Is the following code valid against the JSON Spec ? 6 Answers 6 ...
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Static Indexers?

Why are static indexers disallowed in C#? I see no reason why they should not be allowed and furthermore they could be very useful. ...
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Link to “pin it” on pinterest without generating a button

I have a page with tens or hundreds of posts, each one with social buttons. I just can't generate all the buttons for each url: it is too slow (facebook, g+, twitter, pinterest... for hundreds of links). So, instead of the facebook share button to be generated on the fly, I use a simple img pointing...
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What are the various “Build action” settings in Visual Studio project properties and what do they do

For the most part, you just take whatever Visual Studio sets it for you as a default... I'm referring to the BuildAction property for each file selected in Solution Explorer. There are a number of options and it's difficult to know what each one of them will do. ...
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How do you track record relations in NoSQL?

I am trying to figure out the equivalent of foreign keys and indexes in NoSQL KVP or Document databases. Since there are no pivotal tables (to add keys marking a relation between two objects) I am really stumped as to how you would be able to retrieve data in a way that would be useful for normal we...
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Error “initializer element is not constant” when trying to initialize variable with const

I get an error on line 6 (initialize my_foo to foo_init) of the following program and I'm not sure I understand why. 5 Answ...