Shouldn't that have a relevant overhead when used as:

while ($line = <F>) {
  chomp($line);
  $line = rarely_called($line) if $asciify;
  ...
}

[download]

BTW, I did something like that (using eval), but checking a flag to require the module only in the first call.

In reply to Re^6: Use module only if it is in use by vitoco
in thread Use a module only if it is in use by vitoco

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