X-Git-Url: http://git.vpit.fr/?a=blobdiff_plain;f=lib%2FVariable%2FMagic.pm;h=ac1f80676074026591be2e87afd3f54e0dad5006;hb=0842790276f868200cec87bdcf6fdbbd8b23dc5e;hp=7b4034c5b2a00892e4ffc0b1515c6cb12e9f4656;hpb=146bea88eff25c0c068b82e0e2ddccc5055e6b73;p=perl%2Fmodules%2FVariable-Magic.git

diff --git a/lib/Variable/Magic.pm b/lib/Variable/Magic.pm
index 7b4034c..ac1f806 100644
--- a/lib/Variable/Magic.pm
+++ b/lib/Variable/Magic.pm
@@ -24,14 +24,29 @@ BEGIN {
 
 =head1 SYNOPSIS
 
-    use Variable::Magic qw/wizard cast dispell/;
-
-    my $wiz = wizard set => sub { print STDERR "now set to ${$_[0]}!\n" };
-    my $a = 1;
-    cast $a, $wiz;
-    $a = 2;          # "now set to 2!"
-    dispell $a, $wiz;
-    $a = 3           # (nothing)
+    use Variable::Magic qw/wizard cast VMG_OP_INFO_NAME/;
+
+    { # A variable tracer
+     my $wiz = wizard set  => sub { print "now set to ${$_[0]}!\n" },
+                      free => sub { print "destroyed!\n" };
+
+     my $a = 1;
+     cast $a, $wiz;
+     $a = 2;        # "now set to 2!"
+    }               # "destroyed!"
+
+    { # A hash with a default value
+     my $wiz = wizard data     => sub { $_[1] },
+                      fetch    => sub { $_[2] = $_[1] unless exists $_[0]->{$_[2]}; () },
+                      store    => sub { print "key $_[2] stored in $_[-1]\n" },
+                      copy_key => 1,
+                      op_info  => VMG_OP_INFO_NAME;
+
+     my %h = (_default => 0, apple => 2);
+     cast %h, $wiz, '_default';
+     print $h{banana}, "\n"; # "0", because the 'banana' key doesn't exist in %h
+     $h{pear} = 1;           # "key pear stored in helem"
+    }
 
 =head1 DESCRIPTION