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Running multiple commands in one line in shell
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edited Apr 26 '14 at 1:06
answered Feb 27 '11 at 1:44
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SQL Query to concatenate column values from multiple rows in Oracle
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10 Answers
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Is it fine to have foreign key as primary key?
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134
Foreign keys are almost always "Allow Duplicates," which would make them unsuitable as Primary...
what is faster: in_array or isset? [closed]
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The answers so far are spot-on. Using isset in this case is faster because
It uses an O(1) h...
Custom error pages on asp.net MVC3
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Here's an example of how I handle custom errors. I define an ErrorsController with actions handl...
How to get a complete list of ticker symbols from Yahoo Finance? [closed]
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There is a nice C# wrapper for the Yahoo.Finance API at http://code.google.com/p/yahoo-finance-...
map function for objects (instead of arrays)
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Argparse: Required argument 'y' if 'x' is present
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No, there isn't any option in argparse to make mutually inclusive sets of options.
The simple...
How can I get the diff between all the commits that occurred between two dates with Git?
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Pandas aggregate count distinct
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How about either of:
>>> df
date duration user_id
0 2013-04-01 30 ...