enum-iterator

Crates.ioenum-iterator
lib.rsenum-iterator
version2.1.0
sourcesrc
created_at2018-07-02 22:17:50.932167
updated_at2024-05-01 05:26:36.762667
descriptionTools to iterate over all values of a type (e.g. all variants of an enumeration)
homepagehttps://github.com/stephaneyfx/enum-iterator
repositoryhttps://github.com/stephaneyfx/enum-iterator.git
max_upload_size
id72646
size36,856
crate-publishers (github:osmosis-labs:crate-publishers)

documentation

https://docs.rs/enum-iterator

README

Overview

Tools to iterate over the values of a type.

Examples

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 version

This crate tracks stable Rust. Minor releases may require a newer Rust version. Patch releases must not require a newer Rust version.

Contribute

All contributions shall be licensed under the 0BSD license.

Commit count: 72

cargo fmt