Dear Monks,
I need to use the index function and I found this example:
 #!/usr/bin/perl
  use strict;
  use warnings;

  my $string = 'perlmeme.org';
  my $char = 'e';
  my $offset = 0;

  my $result = index($string, $char, $offset);

  while ($result != -1) {

    print "Found $char at $result\n";

    $offset = $result + 1;
    $result = index($string, $char, $offset);

  }

[download]

This is very straightforward, BUT, how could one find all occurences of a string that is now known exactly beforehand?
Consider the string:
$string = 'IIIIMMMMMMMOOOOOOOOOOMMMMMMMMMMMMMMMIIIIIIMMMMOOOO';

[download]

and say you would like to find all occurences (starting positions and lengths) of the M's substrings.
How do I need to proceed?

In reply to how do you use the index function on this example? by Anonymous Monk

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