[Oberon] Functional programming and Oberon

[Robert Ransom]

On 12/15/16, Richard Hable <informujo at aon.at> wrote:

> - generics
>
> Linked List [T] = RECORD head: T; tail: List [T] END;
>
> Without generics (i.e. type parameters for functions, types, and values)
> it is not possible to define reusable persistent collections. We can't
> just build and manipulate aribitrary pointer structures.

Type extension is sufficient.  A collection module can allow its
client modules to allocate extensions of its own Entry record type, or
it can operate on keys and/or values of type Objects.Object.