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Bash if statement with multiple conditions throws an error
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251
Use -a (for and) and -o (for or) operations.
tldp.org/LDP/Bash-Beginners-Guide/html/sect_07_01....
How do I install an old version of Django on virtualenv?
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142
There was never a Django 1.0.7. The 1.0 series only went up to 1.0.4. You can see all the rele...
How to use glOrtho() in OpenGL?
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Have a look at this picture: Graphical Projections
The glOrtho command produces an "Oblique"...
Remove empty elements from an array in Javascript
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CSS I want a div to be on top of everything
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In order for z-index to work, you'll need to give the element a position:absolute or a positio...
Ruby max integer
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machine_bits = machine_bytes * 8
machine_max_signed = 2**(machine_bits-1) - 1
machine_max_unsigned = 2**machine_bits - 1
If you are looking for the size of Fixnum objects (integers small enough to store in a single machine word), you can call 0.size to get the number of bytes. I would guess ...
Grep regex NOT containing string
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351
grep matches, grep -v does the inverse. If you need to "match A but not B" you usually use pipes...
How to group dataframe rows into list in pandas groupby?
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No secret option provided to Rack::Session::Cookie warning?
I am running Rails 3.2.3, Ruby 1.9 under Fedora 17. I get this warning, when I run rails s , and how do I fix?
7 Answers
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Skip rows during csv import pandas
... I don't want to import the 2nd row of the data file (the row with index = 1 for 0-indexing).
6 Answers
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