Quote: handle messages that are doubly polymorphic, by sending additional messages to the second argument

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In essence, each message transmission [in object- oriented programming] reduces a … However, in the doubly polymorphic example above, the … This suggests that another message must be sent … [e.g., if displaying arbitrary shapes to arbitrary ports, the shapes "displayOn: aPort" message, issues a shape specific message to the port, such as "displayOval: self"].   Google-1   Google-2

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Related Topics

Topic: object-oriented procedures (41 items)
Topic: generic operations and polymorphism (65 items)