For a string 'ABBBCC', I want to produce a list ('A', 'BBB', 'CC'). That is, break the string into pieces based on change of character.

My Perl is getting a bit rusty and I found myself struggling today with this simple problem. Though I've found a solution, shown below, there is probably a better way to do it, hence my question. Apologies if this is a FAQ. 

use strict;
use warnings;

my $str = 'AAABBCCCC';
# For str 'AAABBCCCC', I want to produce a list ('AAA', 'BB', 'CCCC').

# This works ... but is there a better way to do it?
my $i = 0;   # $i is used to filter out the captured $1 fields
my @x = grep { ++$i % 2 } split(/(?<=(.))(?!\1)/, $str);
for my $e (@x) { print "e='$e'\n" }

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In reply to Split a string based on change of character by eyepopslikeamosquito

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