24 releases (13 stable)
2.1.0 | May 1, 2024 |
---|---|
2.0.0 | Feb 25, 2024 |
1.5.0 | Jan 15, 2024 |
1.4.1 | May 4, 2023 |
0.2.0 | Jul 2, 2018 |
#32 in Rust patterns
724,473 downloads per month
Used in 1,418 crates
(161 directly)
34KB
628 lines
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.
Dependencies
~220–660KB
~16K SLoC