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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: https://github.com/rust-lang/rust/blob/7d5ae1863aa66847a4edf8d2ef9420717df65c5d/src/librustdoc/html/format.rs#L507
This directory contains some source code for the Rust project, including:
- The bootstrapping build system
- Various submodules for tools, like cargo, tidy, etc.
For more information on how various parts of the compiler work, see the rustc dev guide.