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How to create a custom string representation for a class object?
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280
Implement __str__() or __repr__() in the class's metaclass.
class MC(type):
def __repr__(self)...
How to get the first element of an array?
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like this
alert(ary[0])
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in_array multiple values
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200
Intersect the targets with the haystack and make sure the intersection is precisely equal to th...
SQL keys, MUL vs PRI vs UNI
...at column.
– pgoetz
Aug 7 '19 at 16:07
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Why does Python print unicode characters when the default encoding is ASCII?
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104
Thanks to bits and pieces from various replies, I think we can stitch up an explanation.
By t...
Sort a text file by line length including spaces
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Answer
cat testfile | awk '{ print length, $0 }' | sort -n -s | cut -d" " -f2-
Or, to do your original (perhaps unintentional) sub-sorting of any equal-length lines:
cat testfile | awk '{ print length, $0 }' | sort -n | cut -d" " -f2-
In both cases, we have solved...
Calling shell functions with xargs
...orting the function should do it (untested):
export -f echo_var
seq -f "n%04g" 1 100 | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
You can use the builtin printf instead of the external seq:
printf "n%04g\n" {1..100} | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
Also, using ret...
Average of 3 long integers
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edited May 23 '17 at 12:02
Community♦
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answered May 30 '14 at 8:05
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Returning a boolean from a Bash function
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10 Answers
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How to fix error with xml2-config not found when installing PHP from sources?
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edited Nov 20 '14 at 17:42
radtek
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