rust-打印变量类型

使用type_name

通过使用std::any::type_name获得.

编写函数

fn print_type_of<T>(_: &T) {
    println!("The type is: {}", type_name::<T>());
}

Example

use std::any::type_name;

fn print_type_of<T>(_: &T) {
    println!("The type is: {}", type_name::<T>());
}

fn main() {
    let a = String::from("Gate");
    let ref b = a;
    let ref c = b;
    print_type_of(&a);
    print_type_of(&b);
    print_type_of(&c);
}