=head2 C<wizard>
- wizard sig => ...,
- data => sub { ... },
+ wizard data => sub { ... },
get => sub { my ($ref, $data [, $op]) = @_; ... },
set => sub { my ($ref, $data [, $op]) = @_; ... },
len => sub { my ($ref, $data, $len [, $op]) = @_; ... ; return $newlen; },
If not specified or undefined, a random signature is generated.
If the signature matches an already defined magic, then the existant magic object is returned.
+This option is B<deprecated> and will be removed in december 2009.
+
=item *
C<data>
# Generate a signature
my $sig = gensig;
+This function is B<deprecated> and will be removed in december 2009.
+
=head2 C<getsig>
getsig $wiz
# Get $wiz signature
my $sig = getsig $wiz;
+This function is B<deprecated> and will be removed in december 2009.
+
=head2 C<cast>
- cast [$@%&*]var, [$wiz|$sig], ...
+ cast [$@%&*]var, $wiz, ...
This function associates C<$wiz> magic to the variable supplied, without overwriting any other kind of magic.
-You can also supply the numeric signature C<$sig> instead of C<$wiz>.
-It returns true on success or when C<$wiz> magic is already present, and croaks on error or when no magic corresponds to the given signature (in case a C<$sig> was supplied).
+It returns true on success or when C<$wiz> magic is already present, and croaks on error.
All extra arguments specified after C<$wiz> are passed to the private data constructor in C<@_[1 .. @_-1]>.
If the variable isn't a hash, any C<uvar> callback of the wizard is safely ignored.
=head2 C<getdata>
- getdata [$@%&*]var, [$wiz|$sig]
+ getdata [$@%&*]var, $wiz
-This accessor fetches the private data associated with the magic C<$wiz> (or the signature C<$sig>) in the variable.
-It croaks when C<$wiz> or C<$sig> do not represent a valid magic object, and returns an empty list if no such magic is attached to the variable or when the wizard has no data constructor.
+This accessor fetches the private data associated with the magic C<$wiz> in the variable.
+It croaks when C<$wiz> do not represent a valid magic object, and returns an empty list if no such magic is attached to the variable or when the wizard has no data constructor.
# Get the attached data, or undef if the wizard does not attach any.
my $data = getdata $x, $wiz;
=head2 C<dispell>
- dispell [$@%&*]variable, [$wiz|$sig]
+ dispell [$@%&*]variable, $wiz
The exact opposite of L</cast> : it dissociates C<$wiz> magic from the variable.
-You can also pass the magic signature C<$sig> as the second argument.
-This function returns true on success, C<0> when no magic represented by C<$wiz> or C<$sig> could be found in the variable, and croaks if the supplied wizard or signature is invalid.
+This function returns true on success, C<0> when no magic represented by C<$wiz> could be found in the variable, and croaks if the supplied wizard is invalid.
# Dispell now.
die 'no such magic in $x' unless dispell $x, $wiz;
The minimum integer used as a signature for user-defined magic.
+This constant is B<deprecated> and will be removed in december 2009.
+
=head2 C<SIG_MAX>
The maximum integer used as a signature for user-defined magic.
+This constant is B<deprecated> and will be removed in december 2009.
+
=head2 C<SIG_NBR>
SIG_NBR = SIG_MAX - SIG_MIN + 1
+This constant is B<deprecated> and will be removed in december 2009.
+
=head2 C<MGf_COPY>
Evaluates to true iff the 'copy' magic is available.