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gerrit-public.fairphone.software / platform / external / rust / crates / num-derive / ca2157b272eb62c5f8e17c73e4422df2549ac512
commitca2157b272eb62c5f8e17c73e4422df2549ac512[log] [tgz]
authorChih-Hung Hsieh <chh@google.com>Thu Oct 01 21:06:05 2020 +0000
committerAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>Thu Oct 01 21:06:05 2020 +0000
treefe685f62dad88790e374a48934534d4517add021
parentcbb466efc6aba87ff4fde376c5fcfe04468ee201 [diff]
parentc864249ebc9e3fd9a516ce2f7743177b08b2f812 [diff]
Fix version number error. am: 4feeeacb57 am: 8b1ebdbf7b am: 12d3ef270c am: 0c15763504 am: c864249ebc

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/num-derive/+/1443103

Change-Id: Ibc05e3629bcdbffcd33fa5d97b66d01fef0f606e
tree: fe685f62dad88790e374a48934534d4517add021
  1. src/
  2. tests/
  3. LICENSE ⇨ LICENSE-APACHE
  4. .cargo_vcs_info.json
  5. .gitignore
  6. Android.bp
  7. Cargo.toml
  8. Cargo.toml.orig
  9. LICENSE-APACHE
  10. LICENSE-MIT
  11. METADATA
  12. MODULE_LICENSE_APACHE2
  13. OWNERS
  14. README.md
  15. RELEASES.md
README.md

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.