commit | af97cfff7745f5cb2cb62f77064541d098aea782 | [log] [tgz] |
---|---|---|
author | Haibo Huang <hhb@google.com> | Tue Aug 11 04:19:49 2020 +0000 |
committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Tue Aug 11 04:19:49 2020 +0000 |
tree | a292ad4adba12cb99a3c1abb1c9e7d6616bad541 | |
parent | 16c55239c24704b28efe1f7bf9f27d1155e4fe58 [diff] | |
parent | 2d2123de22235e1a73365ced2aee40b1dd915881 [diff] |
Upgrade rust/crates/num-derive to 0.3.1 am: 7192095214 am: f22aa339ea am: 1a282d3948 am: 68a4795681 am: 0cc4256df7 am: 2d2123de22 Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/num-derive/+/1392776 Change-Id: I0684c9d739eb4b12f0e55b5bf0c41e6d35b51a48
Procedural macros to derive numeric traits in Rust.
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, }
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.Release notes are available in RELEASES.md.
The num-derive
crate is tested for rustc 1.31 and greater.