Arguments to std::iter::iterate should be flipped #17066
Description
It's currently f: |T| -> T, seed: T but the convention is (and it is more readable) to have the closure last, i.e. seed: T, f: |T| -> T.
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It's currently f: |T| -> T, seed: T but the convention is (and it is more readable) to have the closure last, i.e. seed: T, f: |T| -> T.