iterator-enum

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#[derive(Iterator, DoubleEndedIterator, ExactSizeIterator, Extend)] for enums.

Usage

Add this to your Cargo.toml:

toml [dependencies] iterator-enum = "0.2"

The current iterator-enum requires Rust 1.31 or later.

Examples

```rust use iterator_enum::*;

[derive(Iterator, DoubleEndedIterator, ExactSizeIterator, FusedIterator, Extend)]

enum Either { A(A), B(B), }

fn foo(x: i32) -> impl Iterator { 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 - generated code
• DoubleEndedIterator - generated code
• ExactSizeIterator - generated code
• FusedIterator - generated code
• Extend - generated code
• TrustedLen - generated code (requires "trusted_len" feature)
• ParallelIterator - generated code (requires "rayon" feature)
• IndexedParallelIterator - generated code (requires "rayon" feature)
• ParallelExtend - generated code (requires "rayon" feature)

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

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.