Tab Atkins Jr. wrote:
IME they're ducktyped by the presence of forEach (this is far from perfect).
> Length has nothing to do with iterability. What about generators?
I don't want to go looking anything up right now, but I have lots of
memories of things looking for the presence of "length" to denote an
array-like.
Array-like != iterable.
Eager length is a problem for lazy lists (iterators).
/be
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