Using match variable $1 for a substitution in Perl
Posted
by justintime
on Stack Overflow
See other posts from Stack Overflow
or by justintime
Published on 2010-04-13T21:46:38Z
Indexed on
2010/04/13
21:53 UTC
Read the original article
Hit count: 306
Filed under:
perl
What is the cleanest way of picking up a match variable form a subsitution in Perl I sometimes find myself writing
s/(something)// ;
my $x = $1 ;
then I realise that if the s/ / / fails $1 might be carrying over a value from a previous match. So I try
my $x = 'defaultvalue' ;
if ( s/(something)// )
{
$x = $1 ;
}
Is this be cleanest way of doing it.
© Stack Overflow or respective owner
