Einmalig!

A tiny crate that allows unsizing FnOnce functions without boxing.

Usage

use einmalig::{DynFnOnce, dyn_fnonce};

fn add(f: impl FnOnce(&str) -> String) -> String {
	add_dyn(dyn_fnonce!(f))
}

fn add_dyn(f: DynFnOnce<'_, &str, String>) -> String {
	f.call("malig!")
}

let prefix = "ein".to_owned();
assert_eq!("einmalig!", add(|x| prefix + x));

License

MIT OR Apache-2.0