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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/rust/smart-default/README.md | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/smart-default/README.md')
-rwxr-xr-x | third_party/rust/smart-default/README.md | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/third_party/rust/smart-default/README.md b/third_party/rust/smart-default/README.md new file mode 100755 index 0000000000..226a9cbe14 --- /dev/null +++ b/third_party/rust/smart-default/README.md @@ -0,0 +1,40 @@ +[![Build Status](https://api.travis-ci.org/idanarye/rust-smart-default.svg?branch=master)](https://travis-ci.org/idanarye/rust-smart-default) +[![Latest Version](https://img.shields.io/crates/v/smart-default.svg)](https://crates.io/crates/smart-default) +[![Rust Documentation](https://img.shields.io/badge/api-rustdoc-blue.svg)](https://idanarye.github.io/rust-smart-default/) + +# Rust SmartDefault + +Custom derive for automatically implementing the `Default` trait with customized default values: + +```rust +#[macro_use] +extern crate smart_default; + +#[derive(SmartDefault)] +enum Foo { + Bar, + #[default] + Baz { + #[default = 12] + a: i32, + b: i32, + #[default(Some(Default::default()))] + c: Option<i32>, + #[default(_code = "vec![1, 2, 3]")] + d: Vec<u32>, + #[default = "four"] + e: String, + }, + Qux(i32), +} + +assert!(Foo::default() == Foo::Baz { + a: 12, + b: 0, + c: Some(0), + d: vec![1, 2, 3], + e: "four".to_owned(), +}); +``` + +Requires Rust 1.30+ (for non-string values in attributes) |