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kotlinlang

<https://kotlinlang.slack.com/archives/general/p1480175168007635>
It doesn't implement them, unless you have implemented them manually, it rather inherits their implementation from its superclass `Any`. And those implementations provide identity equality and identity hashcode.
On the other hand data classes have their `hashCode` and `equals` implemented automatically to provide structural equality of their properties. And pretty formatted `toString` comes as a bonus.