overloadable

Overloadable functions done easy in rust.


Keywords
function, overload, overloadable, overwrite
License
MIT

Documentation

overloadable

Easy to use overloadable functions in rust using nightly features.

This crate provides you with the capabilities to overload your functions in a similar style to C# or C++, including support for meta attributes, type parameters and constraints, and visibility modifiers. Please visit the documentation for futher information.

Note

This is a nightly crate. You must include the following line in your code for this crate to compile:

#![feature(unboxed_closures, fn_traits)]

Example:

#![feature(unboxed_closures, fn_traits)]
use overloadable::overloadable;

overloadable! {
    pub func as
    #[inline(always)]
    fn(x: usize, y: usize) -> usize {
        x * y
    },
    fn<'a>(x: &'a usize) -> f32 {
        *x as f32
    },
    fn<'a, T>(x: &'a [T]) -> &'a T where T: std::fmt::Debug {
        println!("Found {:?}", &x[0]);
        &x[0]
    }
}

fn foo() {
    assert_eq!(func(2, 3), 6);
    assert_eq!(func(&32), 32.0);
    assert_eq!(func(&[1, 2, 3, 4][..]), &0);
}