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gerrit-public.fairphone.software / platform / external / rust / crates / num-derive / 52d54ce38c8a43e79e06d142fcab80ac1ce16d34
commit52d54ce38c8a43e79e06d142fcab80ac1ce16d34[log] [tgz]
authorJoel Galenson <jgalenson@google.com>Wed Aug 05 21:36:20 2020 +0000
committerAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>Wed Aug 05 21:36:20 2020 +0000
tree3f574d32667e1823310c92cdacce52b4fa0cad6b
parent15a8a05fb76ee97c116096255a40bdfc3af410b6 [diff]
parent4c9fffb29836f6ac8c9fae78726544dd033a0a01 [diff]
Import num-derive-0.3.0 am: 75ab7e10d2 am: d5f837277a am: aa1165dc0d am: 4c9fffb298

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/num-derive/+/1391410

Change-Id: Id962829964bcf37efc72bdc54de1df5b7d6d3943
tree: 3f574d32667e1823310c92cdacce52b4fa0cad6b
  1. src/
  2. tests/
  3. .cargo_vcs_info.json
  4. .gitignore
  5. Cargo.toml
  6. Cargo.toml.orig
  7. LICENSE-APACHE
  8. LICENSE-MIT
  9. README.md
  10. RELEASES.md
README.md

num-derive

crate documentation minimum rustc 1.31 Travis 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.