You can use a hash to reroute things to the lexical arrays so you don't have to eval: 
my (@a, @b);
my %router = (a => \@a, b => \@b);
foreach my $value (@temp) {
    push @{$router{$1}}, $2 if $value =~ /([ab])_(.*)/;
}
print "@a <==> @b";

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Caution: Contents may have been coded under pressure.

In reply to Re^2: Can this code be optimized further? by Roy Johnson
in thread Can this code be optimized further? by samy_kumar

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