概述

• 📦 crates.io
• 📖 文档
• ⚖ 0BSD 许可证

遍历类型值的工具。

示例

use enum_iterator::{all, cardinality, first, last, next, previous, reverse_all, Sequence};

#[derive(Debug, PartialEq, Sequence)]
enum Day { Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday }

assert_eq!(cardinality::<Day>(), 7);
assert_eq!(all::<Day>().collect::<Vec<_>>(), [
    Day::Monday,
    Day::Tuesday,
    Day::Wednesday,
    Day::Thursday,
    Day::Friday,
    Day::Saturday,
    Day::Sunday,
]);
assert_eq!(first::<Day>(), Some(Day::Monday));
assert_eq!(last::<Day>(), Some(Day::Sunday));
assert_eq!(next(&Day::Tuesday), Some(Day::Wednesday));
assert_eq!(previous(&Day::Wednesday), Some(Day::Tuesday));
assert_eq!(reverse_all::<Day>().collect::<Vec<_>>(), [
    Day::Sunday,
    Day::Saturday,
    Day::Friday,
    Day::Thursday,
    Day::Wednesday,
    Day::Tuesday,
    Day::Monday,
]);

use enum_iterator::{cardinality, first, last, Sequence};

#[derive(Debug, PartialEq, Sequence)]
struct Foo {
    a: bool,
    b: u8,
}

assert_eq!(cardinality::<Foo>(), 512);
assert_eq!(first::<Foo>(), Some(Foo { a: false, b: 0 }));
assert_eq!(last::<Foo>(), Some(Foo { a: true, b: 255 }));

Rust版本

此包跟踪稳定版Rust。次要版本可能需要更高版本的Rust。补丁版本不得需要更高版本的Rust。

贡献

所有贡献均须根据 0BSD 许可证 许可。