Back referencing : Index « Regular Expression « Perl

1. Perl
2. Regular Expression
3. Index

Back referencing

    

while(<DATA>){
    ($first, $last)=/(\w+) (\w+)/;   # Could be: (\S+) (\S+)/
    print "$last, $first\n";
}
__DATA__
    First Last

   
    
    
    
  

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