iter-enum
| Crates.io | iter-enum |
| lib.rs | iter-enum |
| version | 1.1.3 |
| source | src |
| created_at | 2019-11-22 14:42:35.721285 |
| updated_at | 2024-01-27 12:23:38.666826 |
| description | #[derive(Iterator, DoubleEndedIterator, ExactSizeIterator, Extend)] for enums. |
| homepage | |
| repository | https://github.com/taiki-e/iter-enum |
| max_upload_size | |
| id | 183496 |
| size | 49,465 |
Taiki Endo (taiki-e)
documentation
README
iter-enum
#[derive(Iterator, DoubleEndedIterator, ExactSizeIterator, FusedIterator, Extend)] for enums.
Usage
Add this to your Cargo.toml:
[dependencies]
iter-enum = "1"
Compiler support: requires rustc 1.56+
Examples
use iter_enum::*;
#[derive(Iterator, DoubleEndedIterator, ExactSizeIterator, FusedIterator, Extend)]
enum Either<A, B> {
A(A),
B(B),
}
fn foo(x: i32) -> impl Iterator<Item = i32> {
if x > 0 {
Either::A(x..=0)
} else {
Either::B(Some(x).into_iter())
}
}
See auto_enums crate for how to automate patterns like this.
Supported traits
Iterator- example | generated codeDoubleEndedIterator- example | generated codeExactSizeIterator- example | generated codeFusedIterator- example | generated codeExtend- example | generated codeParallelIterator(requires"rayon"feature) - example | generated codeIndexedParallelIterator(requires"rayon"feature) - example | generated codeParallelExtend(requires"rayon"feature) - example | generated code
Optional features
rayon- Enable to use
#[derive(ParallelIterator, IndexedParallelIterator, ParallelExtend)].
- Enable to use
Related Projects
- auto_enums: A library for to allow multiple return types by automatically generated enum.
- derive_utils: A procedural macro helper for easily writing derives macros for enums.
- io-enum: #[derive(Read, Write, Seek, BufRead)] for enums.
License
Licensed under either of Apache License, Version 2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.