Adding the match_and_tr sub missing from your code:
sub match_and_tr {
my $string = shift;
my( $id, $session ) = split( /\./, $string, 2 );
$id =~ /[a-z]/ and $id =~ tr/a-z/A-Z/;
return( $id, $session );
}
I got :
Rate Old way Only TR LC
Old way 193050/s -- -8%
Only TR LC 209205/s 8% --
Rate Only TR UC Old way U
Only TR UC 210084/s -- -2%
Old way U 213675/s 2% --
Which is as expected. The sub that don't do any tring is of course faster.
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