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How to randomly select an item from a list?
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I propose a script for removing randomly picked up items off a list until it is empty:
Maintain a set and remove randomly picked up element (with choice) until list is empty.
s=set(range(1,6))
import random
while len(s)>0:
s.remo...
How to get the command line args passed to a running process on unix/linux systems?
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You can use pgrep with -f (full command line) and -l (long description):
pgrep -l -f PatternOfProcess
This method has a crucial difference with any of the other responses: it works on CygWin, so you can use it to obtain the full command line of any process running under Windows (exe...
Is Meyers' implementation of the Singleton pattern thread safe?
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Algorithm to generate all possible permutations of a list?
...rom https://en.wikipedia.org/wiki/Permutation#/media/File:Permutations_RGB.svg - https://commons.wikimedia.org/wiki/File:Permutations_RGB.svg)
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count (non-blank) lines-of-code in bash
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If you want to use something other than a shell script, try CLOC:
cloc counts blank lines, comment
lines, and physical lines of source
code in many programming languages. It
is written entirely in Perl with no
dependencies outside the standard
distribution of...
How do I get the opposite (negation) of a Boolean in Python?
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Regular expression for letters, numbers and - _
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What is your preferred style for naming variables in R? [closed]
... capitalisation, but as you point out consistency is essential within your script.
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Update statement with inner join on Oracle
...e. But, I wasn't worried about that for now 'cuz I used this for a one off script to correct bad data.
– nemo
May 2 '12 at 0:03
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How can I load an object into a variable name that I specify from an R data file?
...t from another session, it is loaded with the same name, which the loading script cannot possibly know. This name could overwrite an existing variable of the same name in the loading session. Is there a way to safely load an object from a data file into a specified variable name without risk of clob...