https://github.com/huitseeker/match-opt

Convenience macro injecting a partial pattern match into an Option
https://github.com/huitseeker/match-opt

macro option rust

Last synced: 5 days ago
JSON representation

Convenience macro injecting a partial pattern match into an Option

• Host: GitHub
• URL: https://github.com/huitseeker/match-opt
• Owner: huitseeker
• License: mit
• Created: 2022-02-05T17:07:47.000Z (almost 3 years ago)
• Default Branch: trunk
• Last Pushed: 2022-09-19T17:40:01.000Z (over 2 years ago)
• Last Synced: 2024-12-24T05:54:06.024Z (14 days ago)
• Topics: macro, option, rust
• Language: Shell
• Homepage:
• Size: 12.7 KB
• Stars: 0
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
##  match_opt ![Build Status](https://github.com/huitseeker/match-opt/workflows/Rust/badge.svg)

**match_opt** is a macro that converts a partial pattern-match into one that returns an `Option`.

This can be used as a shorthand to simplify a complex pattern-match, for which only one or few cases are useful.

For example:

```rust

let some_results = vec!["1", "2", "3", "foo", "bar", "4"].map(|v| v.parse::());

let some_pattern_match = some_results.filter_map{|x| match x {

    Ok(v) if v > 2 => Some(v),

    _ => None,

}};

// this is equivalent to

let alternate_pattern_match = some_results.filter_map{|x| match_opt!(x, OK(v) if v > 2 => v)};

```

This crate has no dependencies.

Documentation

-------------

The API can be found [here](https://docs.rs/match-opt/).

Installation

------------

Add the following line to the dependencies of your `Cargo.toml`:

```toml

match_opt = "0.1.0"

```

Contributors

------------

The authors of this code is François Garillot ([@huitseeker](https://github.com/huitseeker)).

License

-------

This project is [MIT licensed](./LICENSE).