Matthias Krüger 1cc0ae4cbb Rollup merge of #89869 - kpreid:from-doc, r=yaahc ... Add documentation to more `From::from` implementations. For users looking at documentation through IDE popups, this gives them relevant information rather than the generic trait documentation wording “Performs the conversion”. For users reading the documentation for a specific type for any reason, this informs them when the conversion may allocate or copy significant memory versus when it is always a move or cheap copy. Notes on specific cases: * The new documentation for `From<T> for T` explains that it is not a conversion at all. * Also documented `impl<T, U> Into<U> for T where U: From<T>`, the other central blanket implementation of conversion. * The new documentation for construction of maps and sets from arrays of keys mentions the handling of duplicates. Future work could be to do this for *all* code paths that convert an iterable to a map or set. * I did not add documentation to conversions of a specific error type to a more general error type. * I did not add documentation to unstable code. This change was prepared by searching for the text "From<... for" and so may have missed some cases that for whatever reason did not match. I also looked for `Into` impls but did not find any worth documenting by the above criteria.		2022-02-17 06:29:57 +01:00
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benches	update vec::retain benchmarks	2021-12-04 16:20:35 +01:00
src	Rollup merge of #89869 - kpreid:from-doc, r=yaahc	2022-02-17 06:29:57 +01:00
tests	Add {floor,ceil}_char_boundary methods to str	2022-02-07 13:34:08 -05:00
Cargo.toml	Switch all libraries to the 2021 edition	2021-12-23 19:03:47 +08:00