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Built-in bash Shell Variables

By adfm : 14 May 2010 - 04:05 PM
bash has long been the go-to shell for quick one-off scripts. If you're in the midst of writing such a script and could use a handy reference of the built-in shell variables, than this excerpt from ...
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How to Configure Python

By adfm : 26 March 2010 - 12:11 PM
Every so often you'll need to configure a Python installation. It's a good idea to know where things are and how to point to them if you have to. In this excerpt from Learning Python by Mark Lutz you'...
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Basic Operations in R

By adfm : 27 January 2010 - 03:39 PM
If you're eager to learn more about R and want a taste of what it's like, here's an introduction to the basic operations in R from Joseph Adler's R in a Nutshell. Let’s get started using R....
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What Data Doesn’t Do

By kiwitobes : 30 October 2009 - 03:50 PM
This is a discussion of what data doesn't do: that is, of the various ways in which measurement and interpretation themselves can transform data. This is not a treatise on "lies, damn lies, and stati...
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Exchange Values Without Using Temporary Variables in Perl

By gnat : 20 October 2009 - 02:03 PM
If you want to exchange the values of two scalar variables, but don't want to use a temporary variable, use list assignment to reorder the variables. ($VAR1, $VAR2) = ($VAR2, ...
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