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How to split data into training/testing sets using sample function
I've just started using R and I'm not sure how to incorporate my dataset with the following sample code:
23 Answers
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python: how to identify if a variable is an array or a scalar
I have a function that takes the argument NBins . I want to make a call to this function with a scalar 50 or an array [0, 10, 20, 30] . How can I identify within the function, what the length of NBins is? or said differently, if it is a scalar or a vector?
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Hashing a dictionary?
For caching purposes I need to generate a cache key from GET arguments which are present in a dict.
11 Answers
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How do you create a daemon in Python?
Searching on Google reveals x2 code snippets. The first result is to this code recipe which has a lot of documentation and explanation, along with some useful discussion underneath.
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Custom attributes - Yea or nay?
Recently I have been reading more and more about people using custom attributes in their HTML tags, mainly for the purpose of embedding some extra bits of data for use in javascript code.
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Protected in Interfaces
Why are all methods in an interface definition implicitly public ? Why does it not allow a protected method?
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How do I duplicate a whole line in Emacs?
I saw this same question for VIM and it has been something that I myself wanted to know how to do for Emacs. In ReSharper I use CTRL-D for this action. What is the least number of commands to perform this in Emacs?
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java.util.Date to XMLGregorianCalendar
Isn't there a convenient way of getting from a java.util.Date to a XMLGregorianCalendar?
9 Answers
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Can you delete multiple branches in one command with Git?
I'd like to clean up my local repository, which has a ton of old branches: for example 3.2 , 3.2.1 , 3.2.2 , etc.
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What does %~d0 mean in a Windows batch file?
I'm looking at a batch file which defines the following variables:
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