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Стасенко Константин's questions

Martin Hope
Стасенко Константин
Asked: 2020-07-04 18:40:12 +0000 UTC
  • 2

我想在 rust`e 中编写一些代码，但遇到了一些困难。我用三个相同类型的字段创建了一个结构向量，为此我需要重载加法、减法和乘法运算符。尽管我根据书籍和互联网上的示例做了所有事情，但尝试重载加法运算符失败了。这是代码本身：

use std::ops::Add;

struct Vector<T> {
    x1: T,
    x2: T,
    x3: T,
}

impl<T> Add<T> for Vector<T>
{
    type Output = Vector<T>;
    
    fn add(self, rhs: Vector<T>) -> Vector<T> {
        Vector {x1: self.x1 + rhs.x1, x2: self.x2 + rhs.x2, x3: self.x3 + rhs.x3};
    }
}

fn main() {
    let vector1 = Vector { x1: 5.6, x2: 7.2, x3: 2.5 };
    let vector2 = Vector { x1: -0.1, x2: 10.9, x3: 3.3 };
    println!("Вектор 1: ({}, {}, {})", vector1.x1, vector1.x2, vector1.x3);
    println!("Вектор 2: ({}, {}, {})", vector2.x1, vector2.x2, vector2.x3);
    let vector3 = vector1 + vector2;
    println!("Сумма векторов: ({}, {}, {})", vector3.x1, vector3.x2, vector3.x3);
}

错误：

    error[E0053]: method `add` has an incompatible type for trait
  --> main.rs:13:5
   |
13 | /     fn add(self, rhs: Vector<T>) -> Vector<T> {
14 | |         Vector {x1: self.x1 + rhs.x1, x2: self.x2 + rhs.x2, x3: self.x3 + rhs.x3};
15 | |     }
   | |_____^ expected type parameter, found struct `Vector`
   |
   = note: expected type `fn(Vector<T>, T) -> Vector<T>`
              found type `fn(Vector<T>, Vector<T>) -> Vector<T>`

error: aborting due to previous error(s)

在在线编译器中编写和编译。提前致谢。

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