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what is the "best" block structure to code a tree structure?
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Date: -- (:)
From: Goswin von Brederlow <goswin-v-b@w...>
Subject: Re: [Caml-list] what is the "best" block structure to code a tree structure?
Arkady Andrukonis <grazingcows@yahoo.com> writes:

> Hi,
>
> I would like to find the easiest block structure to represent nested leaves and nodes in a tree structure that works for OCaml. In Common Lisp there is the help of indentation, but I haven't found one for OCaml.
>
> We have one parent node composed of one leaf and a nested node which has  another node with two leaves and a leaf (of the second node). To help illustrate the level of depth we can use numbers 10, 20, and 30.
>     (*
> -------------------
> our type definition
> -------------------
>     *)
> # type tree = Node of tree * tree | Leaf of int;;
>     (*
> ------------
> and our tree
> ------------
>     *)
> # Node ((Leaf 10), (Node ((Node ((Leaf 20),(Leaf 30))), Leaf 30)));;
> -: tree = Node (Leaf 10, Node (Node (Leaf 20, Leaf 30), Leaf 30))

Node ((Leaf 10),
......(Node
.........((Node
.............((Leaf 20),
..............(Leaf 30))),
..........Leaf 30)));;

How about that?

I don't get your numbering though. The 20 is too deep and the second
30 not deep enough imho.

Mfg
        Goswin