10.30.6.20 message/4

Synopsis

message(?Class, ?Op, ?Name, ?Arity)

Arguments

Class

atom

Op

message_operator

Name

atom

Arity

integer

Description

Name/Arity is an Op message understood by instances of Class. This predicate is used to test whether a message is either defined for or inherited by a class.

Op is one of <-, >>, or <<, specifying the kind of message.

See Also

<-/2, <</2, >>/2, direct_message/4