I'm trying to sort my array_ref data structure by the first element which is numeric. I know I'm on the right track but I can't quite get there.
How do I fix the sort part of this algorithm?
#!/usr/bin/perl -w
use strict;
use Data::Dumper;
my $array = [];
push @$array, [ '1', 'one' ];
push @$array, [ '8', 'eight' ];
push @$array, [ '2', 'two' ];
push @$array, [ '100', 'one hundred' ];
push @$array, [ '4', 'four' ];
push @$array, [ '67', 'sixty seven' ];
my $array2 = sort { $@a->[0] <=> $@b->[0] } @$array;
print Dumper \$array2;
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: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.