module main

import maps { from_array, invert, to_map }

struct CustomSet[T] {
mut:
	items map[T]u8
}

pub fn CustomSet.new[T](elements []T) CustomSet[T] {
	return CustomSet[T]{
		items: to_map[T, int, T, int](invert[T, int](from_array[T](elements)), fn [T](key T, _ int) (T, int) {
			return key, 10000
		})
	}
}

dump(CustomSet.new([1]))