In article <70rom2lojv0gj1mgclvar242bb7q3l4ppm@4ax.com>, Paul Johnston
<paul.johnston@manchester.ac.ukwrote:
Quote:
I know this may sound silly but given something like
>
if ($_ =~m/(one)|(two)|(three)/)
>
Is there a maximum length on the size of the item between "/" and" /"
?
Just curious as regards showing bad programming techniques.
|
There is no inherent limit. You are limited by your available memory
for Perl scalars. You can test this easily:
#!/usr/local/bin/perl
use strict;
use warnings;
my $re;
for my $x ( 'aaaa' .. 'zzzz' ) {
$re .= "($x)|";
}
my $s = 'XXXXX';
$re .= "($s)";
print "Length of RE = ", length($re), "\n";
if( $s =~ m/$re/ ) {
print "Match: $&\n";
}
__OUTPUT__
Length of RE = 3198839
Match: XXXXX
FYI: this newsgroup is defunct. Try comp.lang.perl.misc in the future.
