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Calculating moving average

... to calculate the moving average over a series of values in a matrix. The normal R mailing list search hasn't been very helpful though. There doesn't seem to be a built-in function in R will allow me to calculate moving averages. Do any packages provide one? Or do I need to write my own? ...
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Node package ( Grunt ) installed but not available

... grunt , but after running npm install I still can't run the command according to the readme file . It just gives No command 'grunt' found : ...
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Python class inherits object

Is there any reason for a class declaration to inherit from object ? 6 Answers 6 ...
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Remove duplicate values from JS array [duplicate]

I have a very simple JavaScript array that may or may not contain duplicates. 54 Answers ...
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How to use a dot “.” to access members of dictionary?

...n use the Map object like another dictionary(including json serialization) or with the dot notation. I hope to help you: class Map(dict): """ Example: m = Map({'first_name': 'Eduardo'}, last_name='Pool', age=24, sports=['Soccer']) """ def __init__(self, *args, **kwargs): ...
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What's the advantage of a Java enum versus a class with public static final fields?

I am very familiar with C# but starting to work more in Java. I expected to learn that enums in Java were basically equivalent to those in C# but apparently this is not the case. Initially I was excited to learn that Java enums could contain multiple pieces of data which seems very advantageous ( ht...
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How can I manually generate a .pyc file from a .py file

For some reason, I can not depend on Python's "import" statement to generate .pyc file automatically 8 Answers ...
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Maven error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher

... I hit this problem too, and found this article. For Maven3, changing my environment variable name from M2_HOME to M3_HOME did the trick. I am on a Mac running OSX 10.9 with JDK 1.7. Hope this helps. Note: Please delete M2_HOME, if already set. Eg: unset M2_HOME ...
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Is there a way of setting culture for a whole application? All current threads and new threads?

Is there a way of setting culture for a whole application? All current threads and new threads? 10 Answers ...
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What is the “double tilde” (~~) operator in JavaScript? [duplicate]

... That ~~ is a double NOT bitwise operator. It is used as a faster substitute for Math.floor(). share | improve this answer | follow ...