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# icu_properties [](https://crates.io/crates/icu_properties)
<!-- cargo-rdme start -->
Definitions of [Unicode Properties] and APIs for
retrieving property data in an appropriate data structure.
This module is published as its own crate ([`icu_properties`](https://docs.rs/icu_properties/latest/icu_properties/))
and as part of the [`icu`](https://docs.rs/icu/latest/icu/) crate. See the latter for more details on the ICU4X project.
APIs that return a [`CodePointSetData`] exist for binary properties and certain enumerated
properties. See the [`sets`] module for more details.
APIs that return a [`CodePointMapData`] exist for certain enumerated properties. See the
[`maps`] module for more details.
## Examples
### Property data as `CodePointSetData`s
```rust
use icu::properties::{maps, sets, GeneralCategory};
// A binary property as a `CodePointSetData`
assert!(sets::emoji().contains('🎃')); // U+1F383 JACK-O-LANTERN
assert!(!sets::emoji().contains('木')); // U+6728
// An individual enumerated property value as a `CodePointSetData`
let line_sep_data = maps::general_category()
.get_set_for_value(GeneralCategory::LineSeparator);
let line_sep = line_sep_data.as_borrowed();
assert!(line_sep.contains32(0x2028));
assert!(!line_sep.contains32(0x2029));
```
### Property data as `CodePointMapData`s
```rust
use icu::properties::{maps, Script};
assert_eq!(maps::script().get('🎃'), Script::Common); // U+1F383 JACK-O-LANTERN
assert_eq!(maps::script().get('木'), Script::Han); // U+6728
```
[`ICU4X`]: ../icu/index.html
[Unicode Properties]: https://unicode-org.github.io/icu/userguide/strings/properties.html
[`CodePointSetData`]: https://docs.rs/icu_properties/latest/icu_properties/sets/struct.CodePointSetData.html
[`CodePointMapData`]: https://docs.rs/icu_properties/latest/icu_properties/maps/struct.CodePointMapData.html
[`sets`]: https://docs.rs/icu_properties/latest/icu_properties/sets/
<!-- cargo-rdme end -->
## More Information
For more information on development, authorship, contributing etc. please visit [`ICU4X home page`](https://github.com/unicode-org/icu4x).
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