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instmethods

This folder contains an example of instance defined methods. When using classes and instances, methods must be declared in a class but the method definitions may be stored in the instances, either overriding or specializing the class definitions.

This example defines the following objects:

[114, 111, 111, 116]

root class defining a method named method/0

[105, 110, 115, 116, 97, 110, 99, 101, 49]

simple instance of root inheriting method/0

[105, 110, 115, 116, 97, 110, 99, 101, 50]

instance of root overriding the inherited method method/0

[105, 110, 115, 116, 97, 110, 99, 101, 51]

instance of root specializing the inherited method method/0

Print Logtalk, Prolog backend, and kernel versions (if running as a notebook):

%versions

Start by loading the example:

logtalk_load(instmethods(loader)).

The instance1 definition for method method/0 is found in its class:

instance1::method.

<!-- This is the default definition for the method, stored in class root.

true. -->

The instance2 instance overrides the definition of method method/0:

instance2::method.

<!-- This is an overriding definition stored in the instance2 instance itself.

true. -->

The instance3 instance specializes the definition of method method/0:

instance3::method.

<!-- This is a specializing definition stored in the instance3 instance itself. It makes a super call to execute the default definition:

This is the default definition for the method, stored in class root.

true. -->