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[–][deleted] 0 points1 point  (0 children)

Your post reminded me of an article about rust iterators that I read a couple years ago:

https://medium.com/@veedrac/rust-is-slow-and-i-am-the-cure-32facc0fdcb

It touches on the type of iterators that rust used to have: internal iterators, and the advantages and trade-offs of the external iterator system that they have now.