ch16.036_best

来自「Perl Best Practices the source code」· 036_BEST 代码 · 共 43 行

##############################################################################
##   Code fragment (Recommended) from Chapter 16 of "Perl Best Practices"   ##
##     Copyright (c) O'Reilly & Associates, 2005. All Rights Reserved.      ##
##  See: http://www.oreilly.com/pub/a/oreilly/ask_tim/2001/codepolicy.html  ##
##############################################################################


# Standard modules...
use strict;
use warnings;
use IO::Prompt;
use Carp;
use English qw( -no_match_vars );
use Data::Alias;
use Readonly;

my $topping = Topping::Dessert->new({ name=>'Yummo', flavour=>'vanilla' });
print $topping->describe(), "\n";

package Topping::Dessert;
use Class::Std;
{
    # Attributes...
    my %name_of     :ATTR;
    my %flavour_of  :ATTR;
 
    sub BUILD {
        my ($self, $ident, $arg_ref) = @_;
        
        $name_of{$ident}    = $arg_ref->{name};
        $flavour_of{$ident} = $arg_ref->{flavour};
 
        return;
    }
 
    # etc.

    sub describe {
        my ($self) = @_;
        return "$name_of{ident $self}: $flavour_of{ident $self}";
    }
}