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| #!/usr/bin/env perl | |
| use strict; | |
| use warnings; | |
| use Benchmark; | |
| use List::Util; | |
| my @keys = List::Util::shuffle( (1..500) x 1000, 600..800 ); | |
| Benchmark::cmpthese(-5, { | |
| with_test => 'my %h; for my $k (@keys) { $h{$k}=1 unless exists $h{$k} }', | |
| no_test => 'my %h; for my $k (@keys) { $h{$k}=1 }', | |
| }); |
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| Rate with_test no_test | |
| with_test 1852124/s -- -0% | |
| no_test 1852549/s 0% -- |
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