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How do I remove duplicate items from an array in Perl?
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You can do something like this as demonstrated in perlfaq4:
sub uniq {
my %seen;
grep !$seen{$_}++, @_;
}
my @array = qw(one two three two three);
my @filtered = uniq(@array);
print "@filtered\n";
Outputs:
one two three
If you want to use a module, try the uniq func...
How to force LINQ Sum() to return 0 while source collection is empty
...imon Belanger
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Common elements comparison between 2 lists
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>>> list1 = [1,2,3,4,5,6]
>>> list2 = [3, 5, 7, 9]
>>> list(set(list1).intersection(list2))
[3, 5]
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How to pass an object into a state using UI-router?
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Ryan Langton
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answered Apr 22 '15 at 8:38
stackOverlordstackOve...
How to get all subsets of a set? (powerset)
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edited Jun 9 '19 at 17:49
Ran Feldesh
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answered Sep 26 '09 at 22...
Hidden features of Python [closed]
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Multiplication on command line terminal
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edited Aug 17 '14 at 12:55
answered Jun 14 '12 at 19:20
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PowerShell: Setting an environment variable for a single command only
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answered Sep 14 '09 at 14:56
Keith HillKeith Hill
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Using LIMIT within GROUP BY to get N results per group?
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You could use GROUP_CONCAT aggregated function to get all years into a single column, grouped by...
What is recursion and when should I use it?
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