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ambitious proposal: polymorphic arithmetics
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Date: 2005-04-06 (16:43)
From: Dmitry Lomov <dmitry.lomov@j...>
Subject: Re: [Caml-list] ambitious proposal: polymorphic arithmetics
Richard Jones wrote:
> The problem, I'm guessing, is that you add polymorphic +, -, and so
> on.  But that's really just a hack in the language.  Sooner or later
> people are going to ask why it's not possible to write a polymorphic
> 'print' function, _without_ hacking the language some more.  At that
> point you need a theory, and you need something like G'Caml, or type
> classes, or GADTS.

Pardon my ignorance, but how are GADTs are going to help in this regard?
I thought GADTs are basically data types with constructors that have
non-uniform "return type".


Dmitry Lomov
JetBrains Inc.
"Develop With Pleasure!"