Re: How do I replace a substring (if exists) with a different substring in a string?

in reply to How do I replace a substring (if exists) with a different substring in a string?

You can use substr, length, and index inside a while loop to do what you want:

  my $string  = '01234567890';
  my $find    = '0';
  my $replace = 'a';  

  my $pos = index($string, $find);

  while($pos > -1) {
    substr($string, $pos, length($find), $replace);
    $pos = index($string, $find, $pos + length($replace));
  }
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IMHO you can't beat the following for readability:

  $string =~ s/\Q$find\E/$replace/g;
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