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Delete all but the most recent X files in bash
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mklement0mklement0
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2
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Understanding implicit in Scala
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399
I'll explain the main use cases of implicits below, but for more detail see the relevant chapt...
How to find the kth largest element in an unsorted array of length n in O(n)?
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31 Answers
31
Active
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An efficient way to transpose a file in Bash
...,j];
}
print str
}
}' file
output
$ more file
0 1 2
3 4 5
6 7 8
9 10 11
$ ./shell.sh
0 3 6 9
1 4 7 10
2 5 8 11
Performance against Perl solution by Jonathan on a 10000 lines file
$ head -5 file
1 0 1 2
2 3 4 5
3 6 7 8
4 9 10 11
1 0 1 2
$ wc -l < file
10000
$ time per...
Runnable with a parameter?
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231
Well it's been almost 9 years since I originally posted this and to be honest, Java has made a ...
Converting a UNIX Timestamp to Formatted Date String
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324
Try gmdate like this:
<?php
$timestamp=1333699439;
echo gmdate("Y-m-d\TH:i:s\Z", $timestam...
Java's Interface and Haskell's type class: differences and similarities?
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newacctnewacct
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Best way to find the intersection of multiple sets?
...tiple arguments to set.intersection(), like
u = set.intersection(s1, s2, s3)
If the sets are in a list, this translates to:
u = set.intersection(*setlist)
where *a_list is list expansion
Note that set.intersection is not a static method, but this uses the functional notation to apply intersec...
Is if(items != null) superfluous before foreach(T item in items)?
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edited Jun 23 '11 at 14:35
answered Jun 23 '11 at 14:16
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