/usr/share/doc/libvariable-magic-perl/examples
Edit: /usr/share/doc/libvariable-magic-perl/examples/vm_vs_tie.pl (957B)
#!/usr/bin/perl
use strict;
use warnings;
use Tie::Hash;
use lib qw
;
use Variable::Magic qw;
use Benchmark qw;
die 'Your perl does not support the nice uvar magic of 5.10.*' unless VMG_UVAR;
tie my %t, 'Tie::StdHash';
$t{a} = 1;
my $wiz = wizard fetch => sub { 0 },
store => sub { 0 },
exists => sub { 0 },
delete => sub { 0 };
my %v;
cast %v, $wiz;
$v{a} = 2;
print "Using Variable::Magic ", $Variable::Magic::VERSION, "\n";
print "Fetch:\n";
cmpthese -1, {
'tie' => sub { $t{a} },
'v::m' => sub { $v{a} }
};
print "Store:\n";
cmpthese -1, {
'tie' => sub { $t{a} = 2 },
'v::m' => sub { $v{a} = 2 }
};
print "Exists:\n";
cmpthese -1, {
'tie' => sub { exists $t{a} },
'v::m' => sub { exists $v{a} }
};
print "Delete/store:\n";
cmpthese -1, {
'tie' => sub { delete $t{a}; $t{a} = 3 },
'v::m' => sub { delete $v{a}; $v{a} = 3 }
};