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|
fn main() {
{
struct Point<T> {
x: T,
y: T,
}
impl<T> Point<T> {
fn x(&self) -> &T {
&self.x
}
}
// implement a particular concrete type
impl Point<f32> {
fn distance_from_origin(&self) -> f32 {
(self.x.powi(2) + self.y.powi(2)).sqrt()
}
}
let p = Point { x: 5, y: 10 };
println!("p.x = {}", p.x());
let p2 = Point { x: 1.0, y: 4.0 };
println!(
"distance between p2 and origin: {}",
p2.distance_from_origin()
);
}
{
struct Point<T, U> {
x: T,
y: U,
}
impl<T, U> Point<T, U> {
fn mixup<V, W>(self, other: Point<V, W>) -> Point<T, W> {
Point {
x: self.x,
y: other.y,
}
}
}
let p1 = Point { x: 5, y: 10.4 };
let p2 = Point { x: "Hello", y: 'c' };
let p3 = p1.mixup(p2);
println!("p3.x = {}, p3.y = {}", p3.x, p3.y);
}
}
|
