test.ooc

import structs/HashMap

main: func {
    a := HashMap<String, String> new()
    a["a"] = "b"
    a each(| val |
        val println()
    )
}

working.ooc

A: class <V> {
    init: func {}
}

B: class<K,V> extends A<V> {
    init: func {}
    each: func (f: Func (V)) {}

}

B<String, Int> new() each(|b| return)