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Is there a library function for Root mean square error (RMSE) in python?

...lso known as MSE, RMD, or RMS. What problem does it solve? If you understand RMSE: (Root mean squared error), MSE: (Mean Squared Error) RMD (Root mean squared deviation) and RMS: (Root Mean Squared), then asking for a library to calculate this for you is unnecessary over-engineering. All these me...
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How can I change the file type association of an existing file in WebStorm?

I accidentally created a file with no extension and I chose the wrong file type association. Text Document I think. I renamed it to have the .js extension which is what I wanted, but now it's stuck without any syntax highlighting. WebStorm doesn't treat it as a javascript file. I can't find anyw...
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Which is the best Linux C/C++ debugger (or front-end to gdb) to help teaching programming? [closed]

...("lite" meaning no pointers, no classes, just plain old C, plus references and STL string and vectors). Students have no previous experience in programming, so I believe that using an interactive debugger would help them understand program flow, variables, and recursion. ...
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Difference between Pragma and Cache-Control headers?

... Pragma is the HTTP/1.0 implementation and cache-control is the HTTP/1.1 implementation of the same concept. They both are meant to prevent the client from caching the response. Older clients may not support HTTP/1.1 which is why that header is still in use. ...
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client secret in OAuth 2.0

...e google drive api, I have to play with the authentication using OAuth2.0. And I got a few question about this. 3 Answers ...
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What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?

... properly). Use the second option if you need to ensure data consistency, and each thread needs to have an up-to-date view of the map. Use the first if performance is critical, and each thread only inserts data to the map, with reads happening less frequently. ...
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Difference between a theta join, equijoin and natural join

I'm having trouble understanding relational algebra when it comes to theta joins, equijoins and natural joins. Could someone please help me better understand it? If I use the = sign on a theta join is it exactly the same as just using a natural join? ...
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What's the difference(s) between .ToList(), .AsEnumerable(), AsQueryable()?

I know some differences of LINQ to Entities and LINQ to Objects which the first implements IQueryable and the second implements IEnumerable and my question scope is within EF 5. ...
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SQL Server Installation - What is the Installation Media Folder?

...8. I have installed .NET framework 3.5. Then I got folder SQL Server 2008 and performed following steps- 10 Answers ...
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Remove duplicate values from JS array [duplicate]

... Quick and dirty using jQuery: var names = ["Mike","Matt","Nancy","Adam","Jenny","Nancy","Carl"]; var uniqueNames = []; $.each(names, function(i, el){ if($.inArray(el, uniqueNames) === -1) uniqueNames.push(el); }); ...