Is there a way to precompile a regex in Perl?

Question

Is there a way to precompile a regex in Perl? I have one that I use many times in a program and it does not change between uses.

Answer 1

Simple: Check the qr// operator (documented in the perlop under Regexp Quote-Like Operators).

my $regex = qr/foo\d/;
$string =~ $regex;