# koruma-collection
[](https://docs.rs/koruma-collection/)
[](https://crates.io/crates/koruma-collection)
[](https://crowdin.com/project/koruma-collection)
A curated set of validators built on top of `koruma`, organized by domain:
string, format, numeric, collection, and general-purpose validators.
## Features
- `full`: enables all validators and optional dependencies.
- `fmt` (default): enables `Display` implementations for validators.
- `fluent`: enables fluent/i18n integration and embedded translations.
- `full-fluent`: `full` + `fluent`.
## Example
```rust
use koruma::Koruma;
use koruma_collection::string::ContainsValidation;
#[derive(Koruma)]
struct User {
#[koruma(ContainsValidation::<_>(substring = "67"))]
username: String,
}
```