Re: remove duplicate value in array

by VSarkiss (Monsignor)

on Jul 11, 2006 at 13:52 UTC ( [id://560460]=note: print w/replies, xml )

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Fletch and Nevtlathiel have it above. Just in case the code sample is too dense, here's a little "looser" version that does the same thing:

my %seen;
$seen{$_}++ for @content;
my @unique = keys %seen;
[download]

So %seen is the hash that gets a key for each unique value in @content, and @unique is an array containing those (unique) keys.

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Re^2: remove duplicate value in array by ptum (Priest) on Jul 11, 2006 at 14:45 UTC
And of course, the nice thing about this particular solution is you can still tell if there were any duplicate keys ... in such cases, the value of $seen{$key} will be greater than 1. No good deed goes unpunished. -- (attributed to) Oscar Wilde	[reply]
Re^2: remove duplicate value in array by ikegami (Patriarch) on Jul 11, 2006 at 22:01 UTC
It doesn't do quite the same thing. Fletch's solution preserves order. Yours does not.	[reply]

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