> [!IMPORTANT]
> Try the optimized version [unicode-id-start](https://github.com/Boshen/unicode-id-start).
# unicode-id
Determine if a `char` is a valid identifier for a parser and/or lexer according to
[Unicode Standard Annex #31](http://www.unicode.org/reports/tr31/) rules.
This is a clone of [unicode-xid](https://github.com/unicode-rs/unicode-xid).
```rust
use unicode_id::UnicodeID;
fn main() {
let ch = 'a';
println!("Is {} a valid start of an identifier? {}", ch, UnicodeID::is_id_start(ch));
}
```
## features
unicode-id supports a `no_std` feature. This eliminates dependence
on std, and instead uses equivalent functions from core.
## changelog
### 0.3.5
- Update to Unicode 16.0.0
### 0.3.4
- Update to Unicode 15.1.0
### 0.3.3
- Update to Unicode 15.0.0
### 0.3.2
- Fix clippy warnings
### 0.3.0
- Fork repo for unicode-id
- Update to Unicode 14.0.0
### 0.2.2
- Add an ASCII fast-path
### 0.2.1
- Update to Unicode 13.0.0
- Speed up lookup
### 0.2.0
- Update to Unicode 12.1.0.
### 0.1.0
- Initial release.