japhy, that's what I would've thought too, but I timed it using Benchmark and the times were actually comparable. One runthrough tr would be a second or two faster, the next one s/// was faster by a second or two. However, as the iteration count went up, the substitution was actually faster consistently.

use Benchmark;

timethese(250000, {
    one => sub {
        $string = "blah+blah+blah";
        $string =~ tr/+/ /;
    },
    two => sub {
        $string = "blah+blah+blah";
        $string =~ s/\+/ /g;
    }
});

print "\n";

timethese(2000000, {
    one => sub {
        $string = "blah+blah+blah";
        $string =~ tr/+/ /;
    },
    two => sub {
        $string = "blah+blah+blah";
        $string =~ s/\+/ /g;
    }
});
[download]

NOTE: I did use counts between 250,000 and 2,000,000 as well.

Maybe its my system, but I thought that this was strange.

Amel - f.k.a. - kel

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