in reply to Perl Module for dealing with number ranges

I certainly do not advocate doing it this way. Use one of the modules and reap the benefits of testing, a user base, docs you don't have to write, and future improvements. This is just for fun and because I found dmmiller2k's example a bit hard to read. 

while (<DATA>) {
    chomp;
    print join(" + ", expand($_)), $/;
}

sub expand {
    my $input = shift;
    $input =~ s/[^-\d,]+//g;
    $input =~ s/-/../g;
    my ( %tmp, @tmp );
    @tmp = ( eval "$input" );
    @tmp{@tmp} = (1) x @tmp; # dedupe
    return sort { $a <=> $b } keys %tmp;
}

__DATA__
1,7-10,3-5,15
or even ... my $input = "1,7-10,3-5,15";

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Re^2:dealing with coordinate ranges
by Discipulus (Canon) on May 20, 2014 at 11:27 UTC
    mmh. some year is passed, but.. I need to expand coordinate ranges, comma separated like in 4 4 , 5-7 5, 0 0, 0-23 2

    With the help of moritz in the chat and plagiarizing rosetta code I ended with this: 
    #!perl
use strict;
use warnings;

my $input = "@ARGV";
my @pairs = split /,/, $input;
foreach my $pair (@pairs){
          $pair =~ s/^\s+//;$pair =~ s/\s+$//;
          print map {"->$_\n"} &exp_coord($pair);
}

sub exp_coord {
    my ($r,$c)=split /\s/,"@_";
    unless (defined $r and defined $c) {warn "Both must be defined. Re
+ceived:",map{defined $_ ? "$_ " : 'UNDEF '}($r,$c);return}
    my @r; my @c;
    my @expanded;
    @r = $r=~/^(.*\d)-(.+)$/ ? ($1..$2) : ($r);
    @c = $c=~/^(.*\d)-(.+)$/ ? ($1..$2) : ($c);

    for my $rc (@r) { for my $cc (@c) { push @expanded, "$rc $cc" } };
    return @expanded;
}

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    HtH
    L*
    There are no rules, there are no thumbs..
    Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.
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