1.21 announcement #203
1.21 announcement #203
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_posts/2017-10-12-Rust-1.21.md
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| preview, and you'll hear more about these plans in the future. | ||
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| Finally, a few documentation improvements. First up, if you visit [the docs | ||
| for `std::os`] (https://doc.rust-lang.org/stable/std/os/), which contains |
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This link isn't rendering right (extra space?)
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Here are the other libs stabilizations in 1.21.
(The PRs say 1.22 but they were backported in rust-lang/rust#44824.) |
| `rustup component add rls-preview`. In general, many useful Rust developer | ||
| tools such as the RLS, Clippy, and `rustfmt` need nightly Rust; this is the | ||
| first steps toward having them work on stable Rust. Please check out the | ||
| preview, and you'll hear more about these plans in the future. |
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Maybe link to an RLS blog post or something?
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yeah i wasn't sure what the best place to link was; @nrc any ideas?
_posts/2017-10-12-Rust-1.21.md
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| doc.crates.io. Future releases will move Cargo's docs over, and at that point, | ||
| doc.crates.io will redirect to doc.rust-lang.org/cargo. Cargo's docs have long | ||
| needed a refreshing, so expect to hear more news about Cargo's docs generally | ||
| through the end of the year. |
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Maybe remove "through the end of the year"? I'd expect we'd continue to work on them indefinitely.
_posts/2017-10-12-Rust-1.21.md
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| Finally, [`std::mem::discriminant` has been | ||
| stabilized](https://doc.rust-lang.org/std/mem/fn.discriminant.html), allowing | ||
| you to see what variant an `enum` is. |
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Maybe add "without using matching"? This may be misleading to newcomers otherwise.
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And maybe "an enum value" or "an enum instance`"?
_posts/2017-10-12-Rust-1.21.md
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| ```rust | ||
| let _x = 5; | ||
| let x = &x; |
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This code doesn't compile.....
error[E0425]: cannot find value `x` in this scope
--> src/main.rs:3:10
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3 | let x = &x;
| ^ did you mean `_x`?
I think it should be:
let x = 5;
let x = &x;
?
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&_x was what I intended; it depends if you think that shadowing obscures or helps the example. oops!
_posts/2017-10-12-Rust-1.21.md
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| version of the documentation has been Linux-specific; this is a first step towards | ||
| rectifying that. This is [specific to the standard | ||
| library](https://github.com/rust-lang/rust/pull/43348) and not for general use; | ||
| we'll hope to improve this further in the future. |
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I think this could just be "we hope" instead of "we'll hope"?
_posts/2017-10-12-Rust-1.21.md
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| Next, [Cargo's docs are moving!](https://github.com/rust-lang/rust/pull/43916) | ||
| Historically, Cargo's docs were hosted on doc.crates.io, which doesn't follow | ||
| the release train model, even though Cargo itself does. This lead to situations |
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s/This lead to/This led to/
_posts/2017-10-12-Rust-1.21.md
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| Finally, [`std::mem::discriminant` has been | ||
| stabilized](https://doc.rust-lang.org/std/mem/fn.discriminant.html), allowing | ||
| you to see what variant an `enum` is. |
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And maybe "an enum value" or "an enum instance`"?
| quality of life change: due to the lack of type-level integers, arrays only | ||
| supported various traits up to size 32. This [has now been fixed for the | ||
| `Clone` trait](https://github.com/rust-lang/rust/pull/43690), which also | ||
| caused a lot of ICEs at times, when a type would be `Copy` but not `Clone`. |
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Maybe spell out ICE here, people might not know what the acronym means.
| caused a lot of ICEs at times, when a type would be `Copy` but not `Clone`. | ||
| For other traits, [an RFC for type-level integers was accepted | ||
| recently](https://github.com/rust-lang/rfcs/blob/master/text/2000-const-generics.md), | ||
| which may help with this situation. That change has yet to be implemented, however, |
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which may help with this situation
It will definitely help.
just a draft, please check it out @rust-lang/core !
The library stuff seems... light. @rust-lang/libs is this all that was done this cycle?