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.. rst-class:: align-right

built-in method

.. index:: pair: forward/1; Built-in method .. _methods_forward_1:

forward/1

Description

::

forward(Message)

User-defined method for forwarding unknown messages sent to an object (using the :ref:control_send_to_object_2 control construct), automatically called by the runtime when defined. This method is declared in the :ref:`forwarding apis:forwarding/0` built-in protocol as a :ref:`public <directives_public_1> predicate. Note that you can make its scope protected or private by using, respectively, :ref:protected or private implementation <inheritance_scope>` of the forwarding protocol.

Modes and number of proofs

::

forward(+callable) - zero_or_more

Errors

(none)

Examples

::

:- object(proxy, implements(forwarding), ...).

forward(Message) :- % delegate unknown messages to the "real" object [real::Message].

.. seealso::

:ref:control_delegate_message_1