Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / rust / crates / num-derive / c950f31124b5ce5a76bba2f5c421bf93ccd6c190
commitc950f31124b5ce5a76bba2f5c421bf93ccd6c190[log] [tgz]
authorTreehugger Robot <treehugger-gerrit@google.com>Wed Sep 09 01:47:25 2020 +0000
committerAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>Wed Sep 09 01:47:25 2020 +0000
treef1546fb003238079fa24c76f6c46fee6b60e64ea
parente0b47a03b6433947e5b8e29f2b859a6363199236 [diff]
parent136143af2335b2e9011d2a137c493259359c1f7b [diff]
Merge "Upgrade rust/crates/num-derive to 0.3.2" am: bc1a184f11 am: 4d6bf7c720 am: 977a9d652c am: b8c964ebfe am: 5c49c76952 am: 136143af23

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/num-derive/+/1409052

Change-Id: I105dcdb66e375b60d5fbfe5845ae1bd01bbe18c5
tree: f1546fb003238079fa24c76f6c46fee6b60e64ea
  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. README.md
  14. 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.