![]() librustdoc: create a helper for separating elements of an iterator instead of implementing it multiple times
This implements something similar to [`Itertools::format`](https://docs.rs/itertools/latest/itertools/trait.Itertools.html#method.format), but on `Fn`s returning iterators instead of directly on iterators, to allow implementing `Display` without the use of a `Cell` (to handle the possibility of `fmt` being called multiple times while receiving `&self`).
~This is WIP, I just want to get a perf run first to see if the regression I saw in #135494 is fixed~
This was originally part of #135494 , but originally caused a perf regression that was since fixed:
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Cargo.lock | ||
Cargo.toml | ||
CODE_OF_CONDUCT.md | ||
config.example.toml | ||
configure | ||
CONTRIBUTING.md | ||
COPYRIGHT | ||
INSTALL.md | ||
LICENSE-APACHE | ||
license-metadata.json | ||
LICENSE-MIT | ||
README.md | ||
RELEASES.md | ||
REUSE.toml | ||
rust-bors.toml | ||
rustfmt.toml | ||
triagebot.toml | ||
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