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How can I quantify difference between two images?
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How to set auto increment primary key in PostgreSQL?
I have a table in PostgreSQL with 22 columns, and I want to add an auto increment primary key.
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What's the difference between deque and list STL containers?
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edited Jun 20 at 9:12
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answered Sep 16 '09 at 23:34
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How to check if there's nothing to be committed in the current branch?
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An alternative to testing whether the output of git status --porcelain is empty is to test eac...
Chmod recursively
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edited Nov 14 '12 at 11:30
answered Nov 14 '12 at 11:23
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Find MongoDB records where array field is not empty
...lution:
ME.find({ pictures: { $exists: true, $ne: [] } })
Since MongoDB 2.6 release, you can compare with the operator $gt but could lead to unexpected results (you can find a detailled explanation in this answer):
ME.find({ pictures: { $gt: [] } })
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Checking for empty arrays: count vs empty
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Finding local maxima/minima with Numpy in a 1D numpy array
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Create Windows service from executable
... binPath=.
More information on the sc command can be found in Microsoft KB251192.
Note that it will not work for just any executable: the executable must be a Windows Service (i.e. implement ServiceMain). When registering a non-service executable as a service, you'll get the following error upon ...
using awk with column value conditions
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If you're looking for a particular string, put quotes around it:
awk '$1 == "findtext" {print $...