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If you don't recreate the dispatch table upon every invocation of dispatch() by placing it outside of the routine, the difference already is much smaller:

Rate dispatch elsif dispatch 9363/s -- -12% elsif 10627/s 13% --

even though in that case, there's still a disadvantage on the side of the dispatch table, because the $y needs to be passed to the anonymous sub...

my %dispatch=( A=>sub { split(/!/,$_[0]); }, ... ); sub dispatch { my $x=$letters[random($nLetters)]; my $y='xyzzy!' x random(1000); if (exists $dispatch{$x}) { $dispatch{$x}->($y); } else { warn "Huh?"; } }

In reply to Re: elsif chain vs. dispatch by almut
in thread elsif chain vs. dispatch by sflitman

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