https://github.com/thiskai/constructor-macro

https://github.com/thiskai/constructor-macro

Last synced: 8 days ago
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• Host: GitHub
• URL: https://github.com/thiskai/constructor-macro
• Owner: thisKai
• License: mit
• Created: 2019-06-08T17:33:51.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2020-04-01T00:24:48.000Z (over 4 years ago)
• Last Synced: 2024-10-12T23:42:25.549Z (about 1 month ago)
• Language: Rust
• Size: 20.5 KB
• Stars: 3
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# constructor-macro

## Cargo.toml

```toml

[dependencies]

constructor-macro = "0.4"

```

## Example

### Rust 2018

```rust

use constructor_macro::ConstructorMacro;

#[derive(ConstructorMacro)]

pub struct Thing {

    #[default(1)]

    pub field1: i32,

    pub field2: i32,

}

fn main() {

    let thing1 = Thing!();

    assert_eq!(thing1.field1, 1);

    assert_eq!(thing1.field2, 0);

    let thing2 = Thing! { field1: 2 };

    assert_eq!(thing2.field1, 2);

    assert_eq!(thing2.field2, 0);

    let thing3 = Thing! {

        field1: 0,

        field2: 100,

    };

    assert_eq!(thing3.field1, 0);

    assert_eq!(thing3.field2, 100);

}

```

### Rust 2015

```rust

#[macro_use]

extern crate constructor_macro;

...

```