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Update RELEASES to clarify attribute macro values.

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Eric Huss 2021-08-15 10:38:45 -07:00
parent c0490a2dbb
commit 634244e63f
1 changed files with 4 additions and 9 deletions
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RELEASES.md
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@ -4,18 +4,13 @@ Version 1.54.0 (2021-07-29)
Language Language
----------------------- -----------------------
- [You can now use macros for values in built-in attribute macros.][83366] - [You can now use macros for values in some built-in attributes.][83366]
While a seemingly minor addition on its own, this enables a lot of This primarily allows you to call macros within the `#[doc]` attribute. For
powerful functionality when combined correctly. Most notably you can example, to include external documentation in your crate, you can now write
now include external documentation in your crate by writing the following. the following:
```rust ```rust
#![doc = include_str!("README.md")] #![doc = include_str!("README.md")]
``` ```
You can also use this to include auto-generated modules:
```rust
#[path = concat!(env!("OUT_DIR"), "/generated.rs")]
mod generated;
```
- [You can now cast between unsized slice types (and types which contain - [You can now cast between unsized slice types (and types which contain
unsized slices) in `const fn`.][85078] unsized slices) in `const fn`.][85078]