G'day h2,

"... and ended up with a 4x (!) speed improvement ..."

You might like to take a look at "perlperf - Perl Performance and Optimization Techniques" which discusses this, amongst other things, and includes benchmarks.

While y/// and s/// are not always interchangeable, when they can provide the same functionality, I've generally found y/// to be measurably faster than s///.

— Ken

In reply to Re: 4x faster now! by kcott
in thread Syntax Perl Version support $c = () = $a =~ /\./g by h2

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