'in' for plain arrays?

[bearophile]

Pelle M.:

> It doesn't exist for performance reasons, I think.

It's not a matter of performance. Walter thinks that "in" on AAs searches on keys. And the "keys" of a dynamic array are its indices. And searching for indices in a dynamic array is not so useful. Therefore no "in" for dynamic/static arrays. I think this line of thought is not practical, and Python gets this better.

Bye,
bearophile