The non-recursive tree type where the child type is left as open. Used by the recursion schemes. A tree is either a leaf or a branch.
The underlying type of the tree. For example, in a numeric tree it would be number.
number
The child node type, also called the carrier type.
The non-recursive tree type where the child type is left as open. Used by the recursion schemes. A tree is either a leaf or a branch.