Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Document pre-Rust-2021 special case for IntoIterator method lookup #1154

Merged
merged 2 commits into from
Feb 15, 2022

Conversation

mattheww
Copy link
Contributor

@mattheww mattheww commented Feb 1, 2022

Closes #1068

This behaviour is also documented in the standard library docs for the array type.

The edition guide doesn't say that the special-case behaviour applies when the array type is reached via deref coercions, but this is clear from the implementation. It's also mentioned in rust-lang/rust#84147 (comment).

This is the #[rustc_skip_array_during_method_dispatch] special case.
@est31
Copy link
Member

est31 commented Feb 3, 2022

IMO this should also mention that this behaviour might be changed in the future, see rust-lang/rust#84590 .

@mattheww
Copy link
Contributor Author

mattheww commented Feb 6, 2022

I've added a sentence saying that.

I observe that CONTRIBUTING.md says "Documentation is written as if the current stable release of Rust is the last release", but I see there are a number of existing exceptions of this sort.

Copy link
Contributor

@ehuss ehuss left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Thanks, looks good!

This is dancing precariously with the divide between the language and the standard library, and it is a bit unfortunate to include.

@ehuss ehuss merged commit 70fc73a into rust-lang:master Feb 15, 2022
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Feb 16, 2022
Update books

## nomicon

3 commits in 9493715a6280a1f74be759c7e1ef9999b5d13e6f..90993eeac93dbf9388992de92965f99cf6f29a03
2022-01-27 19:00:32 -0800 to 2022-02-13 12:44:12 +0900
- Fix a small typo in exception-safety.md (rust-lang/nomicon#341)
- Make `Vec::new` public in vec-alloc.md (rust-lang/nomicon#336)
- Fix a syntax error in leaking.md (rust-lang/nomicon#335)

## reference

6 commits in 411c2f0d5cebf48453ae2d136ad0c5e611d39aec..70fc73a6b908e08e66aa0306856c5211312f6c05
2022-01-30 12:46:37 -0800 to 2022-02-14 19:33:01 -0800
- Document pre-Rust-2021 special case for IntoIterator method lookup (rust-lang/reference#1154)
- Mention std::is_aarch64_feature_detected (rust-lang/reference#1061)
- Fix link to the Bastion of the Turbofish (rust-lang/reference#1161)
- Improve associated constant item CTFE timing section (rust-lang/reference#1147)
- document `#![feature(const_generics_defaults)]` (rust-lang/reference#1098)
- Update patterns allowed in @ patterns (rust-lang/reference#1158)

## book

6 commits in 98904efaa4fc968db8ff59cf2744d9f7ed158166..67b768c0b660a069a45f0e5d8ae2f679df1022ab
2022-01-29 21:22:31 -0500 to 2022-02-09 21:52:41 -0500
- Snapshot of ch18 for nostarch
- Remove mention of destructuring references as that's not covered currently
- Add note that exhaustiveness checking doesn't extend to match guards
- Change match guard example to actually be unexpressable with patterns alone
- Corrected listing number from 9-10 to 9-13
- Remove duplicate paragraph after No Starch related changes

## rustc-dev-guide

3 commits in 8763adb62c712df69b1d39ea3e692b6d696cc4d9..62f58394ba7b203f55ac35ddcc4c0b79578f5706
2022-01-26 14:01:40 -0800 to 2022-02-11 08:42:50 -0500
- Correction, building stage3 compiler (rust-lang/rustc-dev-guide#1298)
- Triage some date references (rust-lang/rustc-dev-guide#1293)
- mention test folders for cfg(bootstrap) (rust-lang/rustc-dev-guide#1294)
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Feb 16, 2022
Update books

## nomicon

3 commits in 9493715a6280a1f74be759c7e1ef9999b5d13e6f..90993eeac93dbf9388992de92965f99cf6f29a03
2022-01-27 19:00:32 -0800 to 2022-02-13 12:44:12 +0900
- Fix a small typo in exception-safety.md (rust-lang/nomicon#341)
- Make `Vec::new` public in vec-alloc.md (rust-lang/nomicon#336)
- Fix a syntax error in leaking.md (rust-lang/nomicon#335)

## reference

6 commits in 411c2f0d5cebf48453ae2d136ad0c5e611d39aec..70fc73a6b908e08e66aa0306856c5211312f6c05
2022-01-30 12:46:37 -0800 to 2022-02-14 19:33:01 -0800
- Document pre-Rust-2021 special case for IntoIterator method lookup (rust-lang/reference#1154)
- Mention std::is_aarch64_feature_detected (rust-lang/reference#1061)
- Fix link to the Bastion of the Turbofish (rust-lang/reference#1161)
- Improve associated constant item CTFE timing section (rust-lang/reference#1147)
- document `#![feature(const_generics_defaults)]` (rust-lang/reference#1098)
- Update patterns allowed in @ patterns (rust-lang/reference#1158)

## book

6 commits in 98904efaa4fc968db8ff59cf2744d9f7ed158166..67b768c0b660a069a45f0e5d8ae2f679df1022ab
2022-01-29 21:22:31 -0500 to 2022-02-09 21:52:41 -0500
- Snapshot of ch18 for nostarch
- Remove mention of destructuring references as that's not covered currently
- Add note that exhaustiveness checking doesn't extend to match guards
- Change match guard example to actually be unexpressable with patterns alone
- Corrected listing number from 9-10 to 9-13
- Remove duplicate paragraph after No Starch related changes

## rustc-dev-guide

3 commits in 8763adb62c712df69b1d39ea3e692b6d696cc4d9..62f58394ba7b203f55ac35ddcc4c0b79578f5706
2022-01-26 14:01:40 -0800 to 2022-02-11 08:42:50 -0500
- Correction, building stage3 compiler (rust-lang/rustc-dev-guide#1298)
- Triage some date references (rust-lang/rustc-dev-guide#1293)
- mention test folders for cfg(bootstrap) (rust-lang/rustc-dev-guide#1294)
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Feb 16, 2022
Update books

## nomicon

3 commits in 9493715a6280a1f74be759c7e1ef9999b5d13e6f..90993eeac93dbf9388992de92965f99cf6f29a03
2022-01-27 19:00:32 -0800 to 2022-02-13 12:44:12 +0900
- Fix a small typo in exception-safety.md (rust-lang/nomicon#341)
- Make `Vec::new` public in vec-alloc.md (rust-lang/nomicon#336)
- Fix a syntax error in leaking.md (rust-lang/nomicon#335)

## reference

6 commits in 411c2f0d5cebf48453ae2d136ad0c5e611d39aec..70fc73a6b908e08e66aa0306856c5211312f6c05
2022-01-30 12:46:37 -0800 to 2022-02-14 19:33:01 -0800
- Document pre-Rust-2021 special case for IntoIterator method lookup (rust-lang/reference#1154)
- Mention std::is_aarch64_feature_detected (rust-lang/reference#1061)
- Fix link to the Bastion of the Turbofish (rust-lang/reference#1161)
- Improve associated constant item CTFE timing section (rust-lang/reference#1147)
- document `#![feature(const_generics_defaults)]` (rust-lang/reference#1098)
- Update patterns allowed in @ patterns (rust-lang/reference#1158)

## book

6 commits in 98904efaa4fc968db8ff59cf2744d9f7ed158166..67b768c0b660a069a45f0e5d8ae2f679df1022ab
2022-01-29 21:22:31 -0500 to 2022-02-09 21:52:41 -0500
- Snapshot of ch18 for nostarch
- Remove mention of destructuring references as that's not covered currently
- Add note that exhaustiveness checking doesn't extend to match guards
- Change match guard example to actually be unexpressable with patterns alone
- Corrected listing number from 9-10 to 9-13
- Remove duplicate paragraph after No Starch related changes

## rustc-dev-guide

3 commits in 8763adb62c712df69b1d39ea3e692b6d696cc4d9..62f58394ba7b203f55ac35ddcc4c0b79578f5706
2022-01-26 14:01:40 -0800 to 2022-02-11 08:42:50 -0500
- Correction, building stage3 compiler (rust-lang/rustc-dev-guide#1298)
- Triage some date references (rust-lang/rustc-dev-guide#1293)
- mention test folders for cfg(bootstrap) (rust-lang/rustc-dev-guide#1294)
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

2021: Update for into_iter changes
3 participants