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Re: Accessing a matrix value from a dictionary of named coordinate tuples

by kcott (Bishop)
on Mar 11, 2014 at 22:40 UTC ( #1077920=note: print w/replies, xml ) Need Help??


in reply to Accessing a matrix value from a dictionary of named coordinate tuples

G'day xyzzy,

I think this might be the type of thing you're after.

#!/usr/bin/env perl -l use strict; use warnings; my @matrix = ( [qw{A B C}], [qw{D E F}], [qw{G H I}], [qw{J K L}, [ [qw{M N O P Q}, [qw{R S T}], qw{U V W X Y Z}] ] ], ); my %dict = ( a => [0, 0], b => [0, 1], e => [1, 1], g => [2, 0], i => [2, 2], p => [3, 3, 0, 3], s => [3, 3, 0, 5, 1], ); for (qw{a b e g i p s}) { print "$_ => ", get_element(\@matrix, $dict{$_}); } sub get_element { my ($matrix, $coords) = @_; my $element = $matrix->[shift @$coords]; @$coords ? get_element($element, $coords) : $element; }

Output:

a => A b => B e => E g => G i => I p => P s => S

I'll leave you to implement whatever OO framework you need.

-- Ken

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