More concise "Either"?

[Psijic]

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Do not override interface members in delegates

Currently it’s proposed to avoid multiple class inheritance because of lack of it by design, instead use interfaces and delegates: class Foo : Bar by BarImpl() But in this case you need to override methods in this BarImpl by some defaults first and then you have no any clue from a compiler that you need to override them again in the final class. Also it provides a cascade boilerplate of overrides that doesn’t occur if you implement interfaces only. Besides, it’s not possible to pass a variabl…