stable-step

稳定 Rust 中的步骤

示例

无依赖项

[dependencies]
stable-step = "0.1"

use stable_step::{Step, StepExt};

#[derive(Debug, PartialEq, Eq, PartialOrd, Ord)]
enum MyEnum {
    A,
    B,
}

impl Step for MyEnum {
    const MIN: Self = Self::A;
    const MAX: Self = Self::B;

    fn next(&self) -> Option<Self> {
        match self {
            Self::A => Some(Self::B),
            _ => None,
        }
    }

    fn prev(&self) -> Option<Self> {
        match self {
            Self::B => Some(Self::A),
            _ => None,
        }
    }
}

fn main() {
    for value in MyEnum::iter() {
        println!("{:?}", value);
    }
}

过程宏

[dependencies]
stable-step = { version = "0.1", features = ["derive"] }

use stable_step::{Step, StepExt};

#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Step)]
enum MyEnum {
    A,
    B,
}

fn main() {
    for value in MyEnum::iter() {
        println!("{:?}", value);
    }
}

许可证