sender/1

Description

sender(Sender)

Returns the object that has sent the message under processing. Note that this predicate implies an instantiation between its argument and the corresponding implicit context argument in the predicate containing the call. This instantiation occurs at the clause head, not at the clause body.

Template and modes

sender(?object_identifier)

Errors

(none)

Examples

test :-
    sender(Sender),                                              % after compilation, the write/1 call
    write('executing a method to answer a message sent by '),    % will be the first condition on the
    writeq(Sender), nl.                                          % clause body