Function classific::move_to_eq_fn

pub fn move_to_eq_fn<T>(eq_class: impl EqClass<T>) -> impl Fn(&T, &T) -> bool where
    T: ?Sized, 

This function moves an EqClass into a Fn(&T, &T) -> bool to make it usable for APIs which doesn't know about EqClasses.

Examples

use classific::{EqClass, eq_by, move_to_eq_fn};

let mut iter = [(1, 1), (2, 1), (3, 1)].iter();
let first = iter.next();
let eq = move_to_eq_fn(eq_by(|i: &(i8, i8)| i.1));
let r = iter.fold(first, move |acc, next| match acc {
    Some(a) => if eq(a, next) { Some(next) } else { None },
    none => none,
});
assert!(r.is_some());