如何打印结构体和数组? [英] How to print structs and arrays?

问题描述

Go 似乎可以直接打印结构体和数组.

Go seems to be able to print structs and arrays directly.

struct MyStruct {
    a: i32,
    b: i32
}

和

let arr: [i32; 10] = [1; 10];

推荐答案

您想在结构上实现 Debug 特性.使用 #[derive(Debug)] 是最简单的解决方案.然后你可以用 {:?}:

You want to implement the Debug trait on your struct. Using #[derive(Debug)] is the easiest solution. Then you can print it with {:?}:

#[derive(Debug)]
struct MyStruct{
    a: i32,
    b: i32
}

fn main() {
    let x = MyStruct{ a: 10, b: 20 };
    println!("{:?}", x);
}

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