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# `half_open_range_patterns`
The tracking issue for this feature is: [#67264]
It is part of the `#![exclusive_range_pattern]` feature,
tracked at [#37854].
[#67264]: https://github.com/rust-lang/rust/issues/67264
[#37854]: https://github.com/rust-lang/rust/issues/37854
-----
The `half_open_range_patterns` feature allows RangeTo patterns
(`..10`) to be used in appropriate pattern matching contexts.
This requires also enabling the `exclusive_range_pattern` feature.
It also enabled RangeFrom patterns but that has since been
stabilized.
```rust
#![feature(half_open_range_patterns)]
#![feature(exclusive_range_pattern)]
let x = 5;
match x {
..0 => println!("negative!"), // "RangeTo" pattern. Unstable.
0 => println!("zero!"),
1.. => println!("positive!"), // "RangeFrom" pattern. Stable.
}
```
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