I had been wondering - "if I create my own iterator structure, how do I implement map and all the rest on it?" During this talk it clicked for me why I don't have to.
Also loved the bit at the end between bound and unbound.
@finity even manually creating iterator structures will be far less common once generators become stable. They will let you `yield` values from a function, creating an iterator. Until then, another Iterator creation tool you should check out is std::iter::from_fn!
@brk awesome! I've seen from_fn used before, but haven't tried it. I was wondering if something like generators were in the language - that's great that they're coming. I love them in Python for a bunch of tasks.
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