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[Caml-list] Problem with parametric classes
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Frederic Tronel
- Sami Mäkelä
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John Max Skaller
- Frederic Tronel
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| Date: | -- (:) |
| From: | Frederic Tronel <Frederic.Tronel@i...> |
| Subject: | Re: [Caml-list] Problem with parametric classes |
John Max Skaller wrote: > > Frederic Tronel wrote: > > >Hello, > > > >I'm using Ocaml 3.04 (plus a patch applied to circumvent a > >problem with parametric classes bug id 841). > > > >I'm trying to compile the following piece of code (more > >precisely, this is a significant excerpt of the faulty code). > >which fails with the following error: > > > I commented out the initialiser in specElement and got this error: > > File "tmp.ml", line 30, characters 22-41: > The type of this expression, > < get_ident : int; set_ident : int -> unit; _.. > countingObjects, > contains type variables that cannot be generalized > > and here on line 30 you are making an instance object without > binding the type variable .. > > let countingObjects = new countingObjects ;; > > That seems suspicious .. countingObjects is generic > here .. this is at global scope .. the initialiser > which fixes the type is inside a class .. > this has to be wrong .. Why not ? This code has worked for a long time, before I decided to add some features (synchroAccounting class). Frederic. ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners