trpl-zh-cn/listings/ch20-advanced-features/listing-20-15/src/lib.rs

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Rust
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2022-02-06 16:43:51 +08:00
use std::ops::Add;
struct Millimeters(u32);
struct Meters(u32);
impl Add<Meters> for Millimeters {
type Output = Millimeters;
fn add(self, other: Meters) -> Millimeters {
Millimeters(self.0 + (other.0 * 1000))
}
}