diff options
Diffstat (limited to 'src/doc')
| -rw-r--r-- | src/doc/unstable-book/src/language-features/macro-metavar-expr-concat.md | 6 | ||||
| -rw-r--r-- | src/doc/unstable-book/src/library-features/concat-idents.md | 27 |
2 files changed, 3 insertions, 30 deletions
diff --git a/src/doc/unstable-book/src/language-features/macro-metavar-expr-concat.md b/src/doc/unstable-book/src/language-features/macro-metavar-expr-concat.md index b6dbdb14407..7eb5dca532f 100644 --- a/src/doc/unstable-book/src/language-features/macro-metavar-expr-concat.md +++ b/src/doc/unstable-book/src/language-features/macro-metavar-expr-concat.md @@ -8,7 +8,8 @@ In stable Rust, there is no way to create new identifiers by joining identifiers `#![feature(macro_metavar_expr_concat)]` introduces a way to do this, using the concat metavariable expression. > This feature uses the syntax from [`macro_metavar_expr`] but is otherwise -> independent. It replaces the old unstable feature [`concat_idents`]. +> independent. It replaces the since-removed unstable feature +> [`concat_idents`]. > This is an experimental feature; it and its syntax will require a RFC before stabilization. @@ -126,8 +127,7 @@ test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; fini [`paste`]: https://crates.io/crates/paste [RFC 3086]: https://rust-lang.github.io/rfcs/3086-macro-metavar-expr.html -[`concat_idents!`]: https://doc.rust-lang.org/nightly/std/macro.concat_idents.html [`macro_metavar_expr`]: ../language-features/macro-metavar-expr.md -[`concat_idents`]: ../library-features/concat-idents.md +[`concat_idents`]: https://github.com/rust-lang/rust/issues/29599 [#124225]: https://github.com/rust-lang/rust/issues/124225 [declarative macros]: https://doc.rust-lang.org/stable/reference/macros-by-example.html diff --git a/src/doc/unstable-book/src/library-features/concat-idents.md b/src/doc/unstable-book/src/library-features/concat-idents.md deleted file mode 100644 index 8a38d155e3d..00000000000 --- a/src/doc/unstable-book/src/library-features/concat-idents.md +++ /dev/null @@ -1,27 +0,0 @@ -# `concat_idents` - -The tracking issue for this feature is: [#29599] - -This feature is deprecated, to be replaced by [`macro_metavar_expr_concat`]. - -[#29599]: https://github.com/rust-lang/rust/issues/29599 -[`macro_metavar_expr_concat`]: https://github.com/rust-lang/rust/issues/124225 - ------------------------- - -> This feature is expected to be superseded by [`macro_metavar_expr_concat`](../language-features/macro-metavar-expr-concat.md). - -The `concat_idents` feature adds a macro for concatenating multiple identifiers -into one identifier. - -## Examples - -```rust -#![feature(concat_idents)] - -fn main() { - fn foobar() -> u32 { 23 } - let f = concat_idents!(foo, bar); - assert_eq!(f(), 23); -} -``` |