#等价 #结构体 #

struct_macro_eq

实现了对结构体的等价性,但可以使用ignore_regex属性排除字段进行比较

1 个不稳定版本

0.1.0 2023年2月20日

#41 in #等价

MIT许可证

5KB
54

实现了对结构体的等价性,但可以使用ignore_regex属性排除字段进行比较

示例用法

use struct_macro_eq;

/*
tow Dish-es are implemented to be equal here if
their carbs and fats fields match (_temp is excluded
because it starts with an underscore and hence
matches ignore_regex="^_")
*/
#[derive(struct_macro_eq::CustomEq)]
#[ignore_regex="^_"]
struct Dish {
    carbs: u64,
    fats: u64,
    _temp: u64
}

fn main() {
    let dish1 = Dish { carbs: 30, fats: 20, _temp: 30 };
    let dish2 = Dish { carbs: 30, fats: 20, _temp: 20 };
    let dish3 = Dish { carbs: 30, fats: 10, _temp: 30 };

    // dish1 and dish2 are equal
    println!("dish1 == dish2: {}", dish1 == dish2);
    // dish1 and dish3 are not equal
    println!("dish1 == dish3: {}", dish1 == dish3);
}

依赖项

~3.5–4.5MB
~88K SLoC