Crate result_like

OptionLike and ResultLike

Define your own Option-like and Result-like enum types. Avoid to reimplement everything of std::option::Option and std::result::Result for your own enums.

Option example

use result_like::OptionLike;

// Simple case with single argument name to use Some and None
#[derive(OptionLike, Clone, Copy)]
enum MyOption {
    Some(u32),
    None
}

let v = MyOption::Some(1);
// every option utilities are possible including unwrap, map, and, or etc.
assert_eq!(v.unwrap(), 1);

// convertable to option
let opt = v.into_option();
assert_eq!(opt, Some(1));

Result example in same way

use result_like::ResultLike;

#[derive(ResultLike)]
enum Trial<T, E> {
    Success(T),
    Failure(E),
}

Traits

OptionLike

ResultLike

Derive Macros

OptionLike

ResultLike