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Date: | 2005-06-19 (18:09) |
From: | padiolea@i... |
Subject: | Re: [Caml-list] ]Caml-list] Types |
> On Sun, Jun 19, 2005 at 06:42:01PM +1200, Jonathan Roewen wrote: >> Is it possible to create a record type that has a member which is a >> polymorphic type? >> >> I tried: type rect = { mutable x1: 'a; ... } but that doesn't work. >> Also, type a = A of 'a doesn't seem to work either. > > type t = { f : 'a . 'a -> 'a list } > > let x = { f = fun x -> [x] } > > let y = { f = fun x -> [x;x] } why not simply type 'a rect = { mutable x1 = 'a; .... } > > -- > Eric Cooper e c c @ c m u . e d u > > _______________________________________________ > Caml-list mailing list. Subscription management: > http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list > Archives: http://caml.inria.fr > Beginner's list: http://groups.yahoo.com/group/ocaml_beginners > Bug reports: http://caml.inria.fr/bin/caml-bugs >