You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

84 lines
1.7 KiB

## rgb_match
### Instructions
Implement the struct `Color` with the function `swap`.
This function must allow you to swap the values of the struct.
### Notions
4 years ago
- [patterns](https://doc.rust-lang.org/book/ch18-00-patterns.html)
### Expected functions
```rust
4 years ago
pub struct Color {
pub r: u8,
pub g: u8,
pub b: u8,
pub a: u8,
}
impl Color {
4 years ago
pub fn swap(mut self, first: u8, second: u8) -> Color {
}
4 years ago
}
```
### Usage
Here is a program to test your function.
```rust
4 years ago
use rgb_match::*;
fn main() {
let c = Color {
r: 255,
g: 200,
b: 10,
a: 30,
};
println!("{:?}", c.swap(c.r, c.b));
println!("{:?}", c.swap(c.r, c.g));
println!("{:?}", c.swap(c.r, c.a));
println!();
println!("{:?}", c.swap(c.g, c.r));
println!("{:?}", c.swap(c.g, c.b));
println!("{:?}", c.swap(c.g, c.a));
println!();
println!("{:?}", c.swap(c.b, c.r));
println!("{:?}", c.swap(c.b, c.g));
println!("{:?}", c.swap(c.b, c.a));
println!();
println!("{:?}", c.swap(c.a, c.r));
println!("{:?}", c.swap(c.a, c.b));
println!("{:?}", c.swap(c.a, c.g));
}
```
4 years ago
And its output:
```console
student@ubuntu:~/rgb_match/test$ cargo run
Color { r: 10, g: 200, b: 255, a: 30 }
Color { r: 200, g: 255, b: 10, a: 30 }
Color { r: 30, g: 200, b: 10, a: 255 }
Color { r: 200, g: 255, b: 10, a: 30 }
Color { r: 255, g: 10, b: 200, a: 30 }
Color { r: 255, g: 30, b: 10, a: 200 }
Color { r: 10, g: 200, b: 255, a: 30 }
Color { r: 255, g: 10, b: 200, a: 30 }
Color { r: 255, g: 200, b: 30, a: 10 }
Color { r: 30, g: 200, b: 10, a: 255 }
Color { r: 255, g: 200, b: 30, a: 10 }
Color { r: 255, g: 30, b: 10, a: 200 }
student@ubuntu:~/rgb_match/test$
```