13 lines
651 B
Text
13 lines
651 B
Text
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Equatable
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Allows ruby objects to implement equality comparison and inspection methods.
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By including this module, a class indicates that its instances have explicit
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general contracts for `hash`, `==` and `eql?` methods. Specifically `eql?`
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contract requires that it implements an equivalence relation. By default
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each instance of the class is equal only to itself. This is a right
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behaviour when you have distinct objects. However, it is the responsibility
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of any class to clearly define their equality. Failure to do so may prevent
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instances to behave as expected when for instance `Array#uniq` is invoked or
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when they are used as `Hash` keys.
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