Dmitry Soshnikov wrote:

    The Collection protocol thus consists of at least .constructor,
    @@iterator, .set. (Is there a better way to clone? Don't want a
    new protocol where an old one will suffice!) This Collection
    protocol would include Map and maplikes but leaves out Set, Array,
    Object -- appropriately.


As long as it can be generic enough for `Map`, `Set`

Set methods include add, whereas Map has set. Set lacks a get method, whereas Map of course has one. So not the same protocol.

/be
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