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gerrit-public.fairphone.software / platform / external / rust / crates / num-derive / e6a84300324de139e651522877eedee8f21ae8a0
commite6a84300324de139e651522877eedee8f21ae8a0[log] [tgz]
authorJoel Galenson <jgalenson@google.com>Wed Aug 05 20:52:58 2020 +0000
committerAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>Wed Aug 05 20:52:58 2020 +0000
tree0c196e3ca04e67f388c8c08fe571d4ff6e251ff6
parent6bb82878151df503670ab2c2bf6364722df2dec3 [diff]
parent441a10de7172ab2fe0ca4224c3821a065290fbdd [diff]
Add Android.bp am: 306be67b45 am: 441a10de71

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/num-derive/+/1391412

Change-Id: I3e293f3066eb8438a3fcb3e3cbebd74614d9a665
tree: 0c196e3ca04e67f388c8c08fe571d4ff6e251ff6
  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 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.