Can a type have more than one immediate supertype? If not, why not? If it can, then can one define an abstract supertype of e.g. Float64? [ I sense from Make an existing type a child of an abstract type - #2 by Raf and How to make an abstract type as a super type of composite types that the a…

New abstract supertype of existing type

jzr June 27, 2021, 2:22am 2

No it can’t.

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