29 lines
799 B
Perl
Executable File
29 lines
799 B
Perl
Executable File
#!perl
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use strict;
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use warnings;
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use Variable::Magic qw<wizard cast VMG_OP_INFO_NAME>;
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{
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my $wiz = wizard set => sub { print "now set to ${$_[0]}!\n" },
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free => sub { print "destroyed!\n" };
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my $a = 1;
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cast $a, $wiz;
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$a = 2; # "now set to 2!"
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} # "destroyed!"
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{
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my $wiz = wizard data => sub { $_[1] },
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fetch => sub { $_[2] = $_[1] unless exists $_[0]->{$_[2]}; () },
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store => sub { print "key $_[2] stored in $_[-1]\n" },
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copy_key => 1,
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op_info => VMG_OP_INFO_NAME;
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my %h = (_default => 0, apple => 2);
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cast %h, $wiz, '_default';
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print $h{banana}, "\n"; # "0", because the 'banana' key doesn't exist in %h
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$h{pear} = 1; # "key pear stored in helem"
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}
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