[m-dev.] typed_unify

[Fergus Henderson]

On 17-Feb-2006, Ian MacLarty <maclarty at cs.mu.OZ.AU> wrote:
> What is the reason that typed_unify is in private_builtin?

It is needed for the implementation of compiler-generated unification
procedures for existentially quantified types.

> Is there any harm in exposing it publically?  Sometimes it is useful
> for downcasting existentially quantified types.

It is already exposed publically with the name dynamic_cast in std_util.m.

-- 
Fergus Henderson                    |  "I have always known that the pursuit
                                    |  of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- the last words of T. S. Garp.
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