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| author | Corey Farwell <coreyf@rwell.org> | 2017-03-11 20:50:18 -0500 |
|---|---|---|
| committer | Corey Farwell <coreyf@rwell.org> | 2017-03-13 21:38:24 -0400 |
| commit | 0dd03ffaf72d317d7fed27562fa2c76061cd3aff (patch) | |
| tree | e4469dc47d6826e8f534cc709b063a92d2c26df2 /src | |
| parent | 327e8e9196b638c4ed35ab2d57d550a3138a628b (diff) | |
| download | rust-0dd03ffaf72d317d7fed27562fa2c76061cd3aff.tar.gz rust-0dd03ffaf72d317d7fed27562fa2c76061cd3aff.zip | |
Rust unstable book: basic desc and example for `const_indexing`.
Diffstat (limited to 'src')
| -rw-r--r-- | src/doc/unstable-book/src/const-indexing.md | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/doc/unstable-book/src/const-indexing.md b/src/doc/unstable-book/src/const-indexing.md index bd92b0b1b47..42d46ce15f6 100644 --- a/src/doc/unstable-book/src/const-indexing.md +++ b/src/doc/unstable-book/src/const-indexing.md @@ -6,5 +6,14 @@ The tracking issue for this feature is: [#29947] ------------------------ +The `const_indexing` feature allows the constant evaluation of index operations +on constant arrays and repeat expressions. +## Examples +```rust +#![feature(const_indexing)] + +const ARR: [usize; 5] = [1, 2, 3, 4, 5]; +const ARR2: [usize; ARR[1]] = [42, 99]; +``` \ No newline at end of file |