13 lines
701 B
Markdown
13 lines
701 B
Markdown
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# Inheritance, Properties and Polymorphism
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Rust does not allow extending classes. Instead the base class is stored as a
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field in the extending class. Polymorphism can then be achieved by passing the
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field instead of the whole object to a function. Although casting back to the
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advanced class or overriding functions is not possible.
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Properties don't exist either, like in java. But replacing them with getters and
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setters is also discouraged. Quoting from a reddit post 'Expose behavior, not
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state'. That means you should present functions to outside viewers and not your
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plain data. An object should be able to do all its intended functions itself
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without having an outside observer read its data.
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