Re: map and grep or clear code?


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Re: map and grep or clear code?

by tobyink (Canon)

on Jan 31, 2012 at 11:04 UTC ( [id://950950]=note: print w/replies, xml )

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in reply to map and grep or clear code?

Personally I'd find a simple regex s/// simpler than all of the above:

use strict;
use warnings;
use 5.10.1;

my $filter_clean = 'GAV18';
my %filter_map = (
    A => 2,
    B => 2,
    # ...
    Y => 9,
    Z => 9,
);
$filter_map{$_} = $_ for 0..9;

(my $output = uc $filter_clean)
    =~ s{ (.) }{ $filter_map{$1} }exg;

say $output;
[download]

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Re^2: map and grep or clear code? by brx (Pilgrim) on Jan 31, 2012 at 18:59 UTC
No need to extend the hash (with 0..9) : `(my $output = $filter_clean) =~ s{ (\D) }{ $filter_map{uc $1} }exg;` [download] If the aim isn't to separate data and function : `use strict; use warnings; use 5.10.1; my $filter_clean = 'GaV18'; sub filter2num { local $_=shift; s/[ABC] /2/igx; s/[DEF] /3/igx; s/[GHI] /4/igx; s/[JKL] /5/igx; s/[MNO] /6/igx; s/[PQRS]/7/igx; s/[TUV] /8/igx; s/[WXYZ]/9/igx; return $_; } say filter2num($filter_clean);` [download]	[reply] [d/l] [select]
Re^3: map and grep or clear code? by tobyink (Canon) on Jan 31, 2012 at 19:16 UTC
Even something like: `$filter_clean =~ tr/A-Z/22233344455566677778889999/;` [download] ought to do.	[reply] [d/l]

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