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?";
}
}
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