Matthias Krüger eedb51210c Rollup merge of #99460 - JanBeh:PR_asref_asmut_docs, r=joshtriplett ... docs: Improve AsRef / AsMut docs on blanket impls There are several issues with the current state of `AsRef` and `AsMut` as [discussed here on IRLO](https://internals.rust-lang.org/t/semantics-of-asref/17016). See also #39397, #45742, #73390, #98905, and the FIXMEs [here](https://github.com/rust-lang/rust/blob/1.62.0/library/core/src/convert/mod.rs#L509-L515) and [here](https://github.com/rust-lang/rust/blob/1.62.0/library/core/src/convert/mod.rs#L530-L536). These issues are difficult to fix. This PR aims to update the documentation to better reflect the status-quo and to give advice on how `AsRef` and `AsMut` should be used. In particular: - Explicitly mention that `AsRef` and `AsMut` do not auto-dereference generally for all dereferencable types (but only if inner type is a shared and/or mutable reference) - Give advice to not use `AsRef` or `AsMut` for the sole purpose of dereferencing - Suggest providing a transitive `AsRef` or `AsMut` implementation for types which implement `Deref` - Add new section "Reflexivity" in documentation comments for `AsRef` and `AsMut` - Provide better example for `AsMut` - Added heading "Relation to `Borrow`" in `AsRef`'s docs to improve structure		2022-10-03 20:58:54 +02:00
..
benches	Use internal iteration in Iterator::{cmp_by, partial_cmp_by, eq_by}	2022-08-21 12:23:10 +02:00
primitive_docs
src	Rollup merge of #99460 - JanBeh:PR_asref_asmut_docs, r=joshtriplett	2022-10-03 20:58:54 +02:00
tests	Fix integer overflow in format!("{:.0?}", Duration::MAX)	2022-09-29 23:06:22 +01:00
Cargo.toml	Avoid use of rand::thread_rng in stdlib benchmarks	2022-05-02 00:08:21 -07:00