Re: Re: Perl Idioms Explained - keys %{{map{$_=>1}@list}}

[Jenda]

This actually seems to be slightly quicker than the grep based solution:

Benchmark: timing 100000 iterations of broquaint, grep_seen, aristotle
+, juerd...
 broquaint: 25 wallclock secs (21.62 usr +  0.01 sys = 21.63 CPU) @ 46
+22.99/s (n=100000)
 grep_seen: 12 wallclock secs (11.55 usr +  0.00 sys = 11.55 CPU) @ 86
+60.26/s (n=100000)
 aristotle: 10 wallclock secs ( 9.05 usr +  0.00 sys =  9.05 CPU) @ 11
+044.84/s (n=100000)
     juerd:  9 wallclock secs ( 8.66 usr +  0.00 sys =  8.66 CPU) @ 11
+543.35/s (n=100000)

on

my @list = qw/a b c d d a e b a b d e f a erti wen udfgn
 wei sdej usdjdh iu t k a b b b b a a a a c d  f e f s r s
 gkl h u s y t d s w s d log u log ds/;

Jenda
Always code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live.
   -- Rick Osborne

Edit by castaway: Closed small tag in signature