do you mind if I simplify it to a one liner?

use strict;
use warnings;
 
my @datas;
 
# for (<DATA>){
#   push @datas, [ m/<(\d+),(\d+)>/ ];
# }
 
@datas = sort { $a->[0] <=> $b->[0] || $a->[1] <=> $b->[1] } 
              map { [ m/<(\d+),(\d+)>/ ] } <DATA>;
 
use Data::Dumper;
print Dumper \@datas;
 
__DATA__
<7,22>
<12,20>
<7,15>
<1,5>
<7,10>

[download]

please see sort about how the boolean three states condition decides about the ordering.

the perlop || is - like in C - short circuiting, that is the RHS is only evaluated (and returned) when the LHS is false (i.e 0 if <=> compares equal values).

If your tuples have more than 2 elements you should ask for a generic solution.

Cheers Rolf

In reply to Re^3: beginner - ordering tuples by LanX
in thread beginner - ordering tuples by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.