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The purpose of Model View Projection Matrix

... The model, view and projection matrices are three separate matrices. Model maps from an object's local coordinate space into world space, view from world space to camera space, projection from camera to screen. If you compose all three, you...
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Django CharField vs TextField

What is the difference between CharField() and TextField() in Django? The documentation says that CharField() should be used for smaller strings and TextField() should be used for larger strings. Okay, but where is the line drawn between "small" and "large"? What's going on under the ho...
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Change default timeout for mocha

If we have a unit test file my-spec.js and running with mocha: 4 Answers 4 ...
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Test parameterization in xUnit.net similar to NUnit

...zed tests. The way this is done is by creating new attributes that inspect and optionally act upon the arguments and return value of the test methods. You can find a good practical example of how xUnit's data theories can be extended in AutoFixture's AutoData and InlineAutoData theories. ...
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enum.values() - is an order of returned enums deterministic

...d to return them in that order. However you should avoid relying on that, and on the ordinal() value, since it can change after inserting new items, for example. share | improve this answer ...
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Getting individual colors from a color map in matplotlib

... You can do this with the code below, and the code in your question was actually very close to what you needed, all you have to do is call the cmap object you have. import matplotlib cmap = matplotlib.cm.get_cmap('Spectral') rgba = cmap(0.5) print(rgba) # (0.9...
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Java variable number or arguments for a method

...foo(new String[] { "foo", "bar" }); // Arrays are also accepted. foo(); // And even no args. share | improve this answer | follow | ...
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HintPath vs ReferencePath in Visual Studio

What exactly is the difference between the HintPath in a .csproj file and the ReferencePath in a .csproj.user file? We're trying to commit to a convention where dependency DLLs are in a "releases" svn repo and all projects point to a particular release. Since different developers have differen...
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Strange \n in base64 encoded string in Ruby

...he b64encode method is supposed to add a newline for every 60th character, and the example for the encode64 method is actually using the b64encode method. It seems the pack("m") method for the Array class used by encode64 also adds the newlines. I would consider it a design bug that this is not opt...
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How to run a background task in a servlet based web application?

I'm using Java and I want to keep a servlet continuously running in my application, but I'm not getting how to do it. My servlet has a method which gives counts of the user from a database on a daily basis as well as the total count of the users from the whole database. So I want to keep the servlet...