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Polymorphic Variants

Tom
- Seth J. Fogarty
  - Tom
    - Seth J. Fogarty
      - Edgar Friendly
      - Lukasz Stafiniak
      - skaller
- Jonathan Roewen
- Jacques GARRIGUE
  - Christophe TROESTLER
    - Jacques Garrigue
  - skaller
    - Andrej Bauer
  - Tom
    - Jon Harrop
      - Tom
        
        Tom
        
        Jon Harrop
        
        Dirk Thierbach
        
        Tom
        
        Dirk Thierbach
        
        Tom
      - Christophe TROESTLER
    - Jacques Garrigue
      - Jon Harrop
      - skaller
        
        Jacques Garrigue
        
        skaller
      - Tom

Date:	-- (:)
From:	skaller <skaller@u...>
Subject:	Re: [Caml-list] Polymorphic Variants

On Tue, 2007-01-16 at 15:23 -0600, Seth J. Fogarty wrote:

> OCaml does not, as far as I know, have any structural typing for
> records.. 

Hmm .. Felix does, and it supports subtyping (by explicit coercion).
So why doesn't Ocaml have it? Yes, it would be "yet another product
type", bringing the total to 4 in Ocaml (tuples, records, structurally
typed records and classes).

Come to think of it .. aren't classes structurally typed records?

-- 
John Skaller <skaller at users dot sf dot net>
Felix, successor to C++: http://felix.sf.net