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edited Jun 3 '15 at 9:51
Martin Tournoij
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How to implement __iter__(self) for a container object (Python)
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122
I normally would use a generator function. Each time you use a yield statement, it will add an...
How to compare times in Python?
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132
You can't compare a specific point in time (such as "right now") against an unfixed, recurring...
Split output of command by columns using Bash?
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10 Answers
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Foreign Key to multiple tables
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154
You have a few options, all varying in "correctness" and ease of use. As always, the right des...
How to detect if my shell script is running through a pipe?
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In a pure POSIX shell,
if [ -t 1 ] ; then echo terminal; else echo "not a terminal"; fi
returns "terminal", because the output is sent to your terminal, whereas
(if [ -t 1 ] ; then echo terminal; else echo "not a terminal"; fi) | cat
returns "not a t...
Postgres manually alter sequence
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The parentheses are misplaced:
SELECT setval('payments_id_seq', 21, true); # next value will be 22
Otherwise you're calling setval with a single argument, while it requires two or three.
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How to set 'auto' for upper limit, but keep a fixed lower limit with matplotlib.pyplot
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109
You can pass just left or right to set_xlim:
plt.gca().set_xlim(left=0)
For the y axis, use...
How to change column datatype in SQL database without losing data
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11 Answers
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