Recently, I was working on a program that takes one input file and splits it into n other files depending on the content of each line. I figured the most efficient way to do this would be to keep all of my filehandles in a hash, so I wrote the following:

while (<>){
  # do some stuff
  if (defined $fhs{$conn}){
       local *FH = $fhs{$conn};
       print FH $_;
  } else {
       local *FH;
       open(FH, '>', "conn-$conn") or die($!);
       print FH $_;
       $fhs{$conn} = \*FH{IO};
  }
}

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I seem to be able to build up the file handles the way I expected, but by the time I get to the if block, the filehandle is closed. Is there a way I can keep it open? or is there a better way to do this?

Thanks!

In reply to Storing open filehandles in a hash by jpfarmer

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