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## changes
### Instructions
Imagine you are working in a software to control smart lights in a house. You have access to an array of all the lights in a house.
Define the associated function `new` to the data structure `Light` which creates a new light with the alias passed in the arguments and a brightness of 0.
Define the function `change_brightness` that receives a Vec of lights, an alias and a u8 value and sets the u8 value as the new brightness of the light identified by the alias in the Vec of lights.
### Expected Functions and Structure
```rust
#[derive(Debug, Eq, PartialEq, Clone)]
pub struct Light {
pub alias: String,
pub brightness: u8,
}
impl Light {
pub fn new(alias: &str) -> Self {
}
}
pub fn change_brightness(lights: &mut Vec<Light>, alias: &str, value: u8) {
}
```
### Usage
Here is an incomplete program to test your function
```rust
fn main() {
// bedroom
let mut lights = vec![
Light::new("living_room"),
Light::new("bedroom"),
Light::new("rest_room"),
];
println!("brightness = {}", lights[0].brightness);
change_brightness(&mut lights, "living_room", 200);
println!("new brightness = {}", lights[0].brightness);
}
```
And its expected output
```console
student@ubuntu:~/[[ROOT]]/test$ cargo run
brightness = 0
new brightness = 200
student@ubuntu:~/[[ROOT]]/test$
```