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Default function arguments in Rust
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edited Mar 24 '19 at 21:20
answered Jun 5 '14 at 0:06
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SQL query for today's date minus two months
... select all the records in a table where their date of entry is older then 2 months.
5 Answers
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Moving matplotlib legend outside of the axis makes it cutoff by the figure box
...plotlib.pyplot as plt
import numpy as np
plt.gcf().clear()
x = np.arange(-2*np.pi, 2*np.pi, 0.1)
fig = plt.figure(1)
ax = fig.add_subplot(111)
ax.plot(x, np.sin(x), label='Sine')
ax.plot(x, np.cos(x), label='Cosine')
ax.plot(x, np.arctan(x), label='Inverse tan')
handles, labels = ax.get_legend_hand...
Switch case with fallthrough?
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Use a vertical bar (|) for "or".
case "$C" in
"1")
do_this()
;;
"2" | "3")
do_what_you_are_supposed_to_do()
;;
*)
do_nothing()
;;
esac
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Grouped LIMIT in PostgreSQL: show the first N rows for each group?
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287
New solution (PostgreSQL 8.4)
SELECT
*
FROM (
SELECT
ROW_NUMBER() OVER (PARTITION B...
Turn Pandas Multi-Index into column
I have a dataframe with 2 index levels:
3 Answers
3
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Find which version of package is installed with pip
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As of pip 1.3, there is a pip show command.
$ pip show Jinja2
---
Name: Jinja2
Version: 2.7.3
Location: /path/to/virtualenv/lib/python2.7/site-packages
Requires: markupsafe
In older versions, pip freeze and grep should do the job nicely.
$ pip freeze | grep Jinja2
Jinja2==2.7.3
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Pandas every nth row
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207
I'd use iloc, which takes a row/column slice, both based on integer position and following nor...
Why '&&' and not '&'?
...ent to compute the bitwise logical AND etc.
For enumerations (chapter 7.11.2):
They are implemented to perform the logical operation of the underlying type of the enumeration.
For bools and nullable bools (chapter 7.11.3 and 7.11.4):
The result is not computed using bitwise calculations. The result ...
How can I filter a Django query with a list of values?
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562
From the Django documentation:
Blog.objects.filter(pk__in=[1, 4, 7])
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