commit	052a43e109ff61dc9ee8d0c6f2f5c237f8586f83	[log] [tgz]
author	Linux Build Service Account <lnxbuild@localhost>	Sun Jan 16 14:30:20 2022 -0800
committer	Linux Build Service Account <lnxbuild@localhost>	Sun Jan 16 14:30:20 2022 -0800
tree	c9a58f4fc6663d85c63dcb9f4a8cf00c85f3993e
parent	be6bbc16974b0e752bf4baec9b5ac314ff885ba3 [diff]
parent	1f4d15385154d731583d694a5b34b0f035fd5473 [diff]

tree: c9a58f4fc6663d85c63dcb9f4a8cf00c85f3993e

README.md

num-derive

Procedural macros to derive numeric traits in Rust.

Usage

Add this to your Cargo.toml:

[dependencies]
num-traits = "0.2"
num-derive = "0.3"

and this to your crate root:

#[macro_use]
extern crate num_derive;

Then you can derive traits on your own types:

#[derive(FromPrimitive, ToPrimitive)]
enum Color {
    Red,
    Blue,
    Green,
}

Optional features

full-syntax — Enables num-derive to handle enum discriminants represented by complex expressions. Usually can be avoided by utilizing constants, so only use this feature if namespace pollution is undesired and compile time doubling is acceptable.

Releases

Release notes are available in RELEASES.md.

Compatibility

The num-derive crate is tested for rustc 1.31 and greater.

License

Licensed under either of

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.