# `enumerable`
> Enumerate all possible values of a type.
[](https://crates.io/crates/enumerable)
[](https://docs.rs/crate/enumerable/1.0.0)
[](https://github.com/GeminiLab/enumerable/blob/dev/LICENSE)
See the [examples](./examples) for more examples and a guide on how to use the crate.
See the [documentation](https://docs.rs/enumerable) for detailed information on the crate.
## TL;DR
```rust
use enumerable::Enumerable;
#[derive(Debug, Copy, Clone, Enumerable)]
#[allow(dead_code)]
enum Food {
Apple,
Banana,
Coffee { with_milk: bool },
}
#[derive(Debug, Copy, Clone, Enumerable)]
#[allow(dead_code)]
struct Meal {
alice_eats: Food,
bob_eats: Option<Food>,
at_home: bool,
}
fn main() {
println!("There are {} different meals, enumerated as follows:", Meal::ENUMERABLE_SIZE);
for meal in Meal::enumerator() {
println!("{:?}", meal);
}
}
```
The code above will output:
```text
There are 40 different meals, enumerated as follows:
Meal { alice_eats: Apple, bob_eats: None, at_home: false }
Meal { alice_eats: Apple, bob_eats: None, at_home: true }
Meal { alice_eats: Apple, bob_eats: Some(Apple), at_home: false }
Meal { alice_eats: Apple, bob_eats: Some(Apple), at_home: true }
Meal { alice_eats: Apple, bob_eats: Some(Banana), at_home: false }
Meal { alice_eats: Apple, bob_eats: Some(Banana), at_home: true }
Meal { alice_eats: Apple, bob_eats: Some(Coffee { with_milk: false }), at_home: false }
Meal { alice_eats: Apple, bob_eats: Some(Coffee { with_milk: false }), at_home: true }
Meal { alice_eats: Apple, bob_eats: Some(Coffee { with_milk: true }), at_home: false }
Meal { alice_eats: Apple, bob_eats: Some(Coffee { with_milk: true }), at_home: true }
Meal { alice_eats: Banana, bob_eats: None, at_home: false }
...
```