hash => sub {
    while ( $data =~ /^(\d+) (\d+)/mg ) {
        next if exists $hash{$1} or exists $hash{$2};
    }
    return 1;
},
ahead => sub {
    while ( $data =~ /^(?!(?:0|15|16|31)\D)(\d+)\N{SPACE}
                       (?!(?:0|15|16|31)\D)(\d+)/mgx ) {
    }
    return 1;
},

        Rate  hash ahead
hash  1742/s    --  -31%
ahead 2541/s   46%    --

[download]

Wow, thanks. I'll refactor with this, then. As to (1), simply generating a list of few hundred captures is slower, even without working it in pairs later. Sorry about (3), I didn't mean to reproach anyone.

In reply to Re^4: Why is "any" slow in this case? by Anonymous Monk
in thread Why is "any" slow in this case? by Anonymous Monk

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