I even love the way Parse::Range does it. Putting your original $list in the function parse_range prints out beautifully like so:
use warnings;
use strict;
use Parse::Range qw(parse_range);
my $list = "2-4,10-12";
print join ','=> parse_range($list); # 2,3,4,10,11,12
If you tell me, I'll forget.
If you show me, I'll remember.
if you involve me, I'll understand.
--- Author unknown to me
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