Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

Double interpolation of captured substrings

by bobf (Monsignor)
on Nov 17, 2004 at 09:37 UTC ( [id://408346] : perlquestion . print w/replies, xml ) Need Help??

Help for this page

Select Code to Download


  1. or download this
    my $newstring = munge_string( 'one_two_three', '312' );
    
    ...
    
        return $patterns{$patternkey}; # want 'threeonetwo', got '$3$1$2'
    }
    
  2. or download this
    $string =~ s/(\w+)_(\w+)_(\w+)/$patterns{$patternkey}/e;
    print $string; # '$3$1$2'
    
  3. or download this
    $string =~ s/(\w+)_(\w+)_(\w+)/$3$1$2/;
    print $string; # 'threeonetwo'
    
  4. or download this
    $string =~ s/(\w+)_(\w+)_(\w+)/join( '', $3, $1, $2 )/e;
    print $string; # 'threeonetwo'