inheritance-struct2iface

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Golang Inheritance with Method Override

This example shows how Method Override can be implemented in Golang.

Technically this is not inheritance, but it has the feeling of it. There is a "child" struct (or interface) that implements a method, Close(). And then the child is included as an aggregate of the parent. IF the parent does not implement the child's method, see Op(), then it directly callable by users of the parent struct. IF the parent implements the same method as the child, Close() then the parent's implementation overrides the child. Finally, the parent's "overriding" method can explicitly invoke the child's method as is done in Parent.Close(). (It is also possible for users of the parent to explicitly invoke the child's (overridden) method).