Rust Powerset Enum

A poor man's anonymous enum, useful mostly for error handling. Turn your Error enum into a Powerset Enum to allow taking subsets of the original enums.

See the examples, specifically with_powerset_enums.rs vs without_powerset_enums.rs, to understand how this works.

Note: this is a nightly only crate, and to use it you need to enable the following feature flags:

#![feature(never_type, exhaustive_patterns, proc_macro_hygiene)]

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.