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How does collections.defaultdict work?
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What does android:layout_weight mean?
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What's the difference between lists and tuples?
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Apart from tuples being immutable there is also a semantic distinction that should guide thei...
Primary key/foreign Key naming convention [closed]
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Why is my program slow when looping over exactly 8192 elements?
...ue from the following related questions:
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
Matrix multiplication: Small difference in matrix size, large difference in timings
But that's only because there's one other problem with the code.
Starting from th...
How to represent multiple conditions in a shell if statement?
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Classic technique (escape metacharacters):
if [ \( "$g" -eq 1 -a "$c" = "123" \) -o \( "$g" -eq 2 -a "$c" = "456" \) ]
then echo abc
else echo efg
fi
I've enclosed the references to $g in double quotes; that's good practice, in general. Strictly, the parentheses aren't needed becau...
Calculate distance between two latitude-longitude points? (Haversine formula)
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Last non-empty cell in a column
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edited Sep 27 '19 at 20:40
Marc.2377
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