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What does the star operator mean, in a function call?
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932
The single star * unpacks the sequence/collection into positional arguments, so you can do this...
unix - head AND tail of file
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answered Dec 24 '11 at 13:29
Aleksandra ZalcmanAleksandra Zalcman
2,78011 gold badge1313 silver badges1717 bronze badges
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Return multiple columns from pandas apply()
...ue) + ' MB'
s['size_gb'] = locale.format("%.1f", s['size'] / 1024.0 ** 3, grouping=True) + ' GB'
return s
df_test = df_test.append(rows_list)
df_test = df_test.apply(sizes, axis=1)
share
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Some built-in to pad a list in python
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answered Aug 9 '10 at 9:43
John La RooyJohn La Rooy
249k4646 gold badges326326 silver badges469469 bronze badges
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How to delete a row by reference in data.table?
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edited Nov 23 '18 at 12:47
Henrik
52.1k1111 gold badges117117 silver badges134134 bronze badges
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Switch case with fallthrough?
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314
Use a vertical bar (|) for "or".
case "$C" in
"1")
do_this()
;;
"2" | "3")
do_wha...
Why does the order of the loops affect performance when iterating over a 2D array?
...mensional. So while you imagine your array like this:
0,0 | 0,1 | 0,2 | 0,3
----+-----+-----+----
1,0 | 1,1 | 1,2 | 1,3
----+-----+-----+----
2,0 | 2,1 | 2,2 | 2,3
Your computer stores it in memory as a single line:
0,0 | 0,1 | 0,2 | 0,3 | 1,0 | 1,1 | 1,2 | 1,3 | 2,0 | 2,1 | 2,2 | 2,3
In the 2...
Algorithm to find Largest prime factor of a number
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134
Actually there are several more efficient ways to find factors of big numbers (for smaller ones...
Log to the base 2 in python
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233
It's good to know that
but also know that
math.log takes an optional second argument which a...
What's the fastest way to loop through an array in JavaScript?
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346
After performing this test with most modern browsers:
https://jsben.ch/wY5fo
Currently, the fa...