[mercury-users] Dispatch tables? Curried functions?

[Fergus Henderson]

On 05-Jun-2002, Ralph Becket <rafe at cs.mu.OZ.AU> wrote:
> Douglas Michael Auclair, Wednesday,  5 June 2002:
> > I wish to create a map that has string keys and function values to use as a 
> > dispatch table.  The problem I have is that predicate lookup/3 returns the 
> > function in the ground state, not the state of the function (e.g.: 
> > func((ground -> ground), (ground -> ground)) = (free -> ground)) -- the 
> > function lookup also returns the function in the undesired ground state.
> 
> Function insts of the form
> 
> 	func(in, ..., in) = out is det
> 
> are sub-insts of ground.  You can have collections of them without
> having to worry about modes.

Note that this is only the case since Oct 12th last year,
so to make use of this, you do need to use a ROTD release
rather than 0.10.1.

-- 
Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
The University of Melbourne         |  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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