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bgreenlee's scratchpad

by bgreenlee (Friar)
on Jul 13, 2004 at 09:07 UTC ( [id://373896]=scratchpad: print w/replies, xml ) Need Help??
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Searching Backwards

Want to search backwards through a string, but don't want to have to reverse the string first? I had a need to do this recently in a golf problem ("reverse" is just too damn long). If you don't mind destroying your string, use s///: 
$foo = '1 a 2 b 3 c';
while($foo =~ s/(\d)[\D]*$//) {
  print $1;
} 

__output__
321

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