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TIMTOWTDI

I'm also showing the classic hard-coded approach with nested loops and auto-vivification for comparison.

use strict; use warnings; use Data::Dump qw/pp dd/; use Test::More; sub matrix (&@){ my $code = shift; my $rec; my @coor; my $idx; $rec = sub { my $level = shift; return $code->(@coor) unless @_; my $max = shift; my $arr = [ map { $coor[$level] = $_; $rec->($level+1,@_) } 0 .. $max ]; return $arr; }; $rec->(0,@_); } my $a_matrix = matrix {"<@_>"} 3,2,1; my @classic; for my $x (0..3) { for my $y (0..2) { for my $z (0..1) { $classic[$x][$y][$z] = "<$x $y $z>"; } } } #pp \@classic; is_deeply($a_matrix,\@classic,"same matrix"); pp $a_matrix; done_testing;

ok 1 - same matrix [ [ ["<0 0 0>", "<0 0 1>"], ["<0 1 0>", "<0 1 1>"], ["<0 2 0>", "<0 2 1>"], ], [ ["<1 0 0>", "<1 0 1>"], ["<1 1 0>", "<1 1 1>"], ["<1 2 0>", "<1 2 1>"], ], [ ["<2 0 0>", "<2 0 1>"], ["<2 1 0>", "<2 1 1>"], ["<2 2 0>", "<2 2 1>"], ], [ ["<3 0 0>", "<3 0 1>"], ["<3 1 0>", "<3 1 1>"], ["<3 2 0>", "<3 2 1>"], ], ] 1..1

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery


In reply to Re: n-dim array generator by LanX
in thread n-dim array generator by jo37

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