https://github.com/noracodes/whiteout

Utilities for describing the types of values by their behavior
https://github.com/noracodes/whiteout

Last synced: over 1 year ago
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Utilities for describing the types of values by their behavior

• Host: GitHub
• URL: https://github.com/noracodes/whiteout
• Owner: NoraCodes
• Created: 2017-09-01T18:37:21.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2019-10-12T16:28:16.000Z (almost 7 years ago)
• Last Synced: 2025-04-10T04:54:16.608Z (over 1 year ago)
• Language: Rust
• Size: 5.86 KB
• Stars: 3
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# whiteout

[![crates.io badge](https://img.shields.io/crates/v/whiteout.svg)](https://crates.io/crates/whiteout) [documentation](https://docs.rs/whiteout/)  [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT) 

`whiteout` provides macros that erase the type of any value into an `impl Trait` for a given trait. This gives you a value that can only be use with the methods of that trait, and whose type is unnameable.

```rust

#[macro_use] extern crate whiteout;

fn main() {

    let a = erase!(10, std:ops::Add);

    assert_eq!(a + 10, 20);

}

```

Since we sometimes want to use these values together, `whiteout` provides both a one-time macro and a macro that produces a function which returns a consistent unnameable type, allowing multiple erased values to be used in conjunction. See the documentation for more info.