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Github Implement more Iterator methods on core::iter::Repeat by lopopolo · Pull...

 3 years ago
source link: https://github.com/rust-lang/rust/pull/85338
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lopopolo commented 19 days ago •

edited

core::iter::Repeat always returns the same element, which means we can
do better than implementing most Iterator methods in terms of
Iterator::next.

Fixes #81292.

#81292 raises the question of whether these changes violate the contract of core::iter::Repeat, but as far as I can tell core::iter::repeat doesn't make any guarantees around how it calls Clone::clone.


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