Bug: 162331178

Clone this repo:
  1. 6acf04b Migrate to cargo_embargo. am: 13f024459d am: b4a8370cb4 am: ca9335c8ab by Andrew Walbran · 5 months ago emu-34-2-dev main master
  2. f92cd3a Migrate to cargo_embargo. am: 13f024459d am: c8db8b1c6e am: c72a1c22b0 by Andrew Walbran · 5 months ago
  3. ca9335c Migrate to cargo_embargo. am: 13f024459d am: b4a8370cb4 by Andrew Walbran · 5 months ago
  4. c72a1c2 Migrate to cargo_embargo. am: 13f024459d am: c8db8b1c6e by Andrew Walbran · 5 months ago
  5. b4a8370 Migrate to cargo_embargo. am: 13f024459d by Andrew Walbran · 5 months ago

num-derive

crate documentation minimum rustc 1.31 build status

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.