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- Path: sparky!uunet!ogicse!ogicse.cse.ogi.edu!dwights
- From: dwights@ogicse.cse.ogi.edu (Dwight Spencer)
- Newsgroups: comp.lang.functional
- Subject: Re: Polynomial functors (in categorical datatypes)
- Message-ID: <40402@ogicse.ogi.edu>
- Date: 22 Jul 92 21:05:54 GMT
- Article-I.D.: ogicse.40402
- Sender: dwights@ogicse.ogi.edu
- Distribution: world
- Organization: Oregon Graduate Institute (formerly OGC), Beaverton, OR
- Lines: 25
-
- Article 1960 of comp.lang.functional:
- In article <1992Jul22.165153.737@qucis.queensu.ca>
- skill@qucis.queensu.ca (David Skillicorn) writes
-
- > I'm pretty sure that polynomial functors are not what's
- > really needed to make Malcolm-style datatype constructions
- > in BMF work. There's a paper from the group at Calgary
- > (Cockett et al.) from which I gather that strength is
- > the real property of importance.
-
- At least it seems to be an important starting point if we are to take
- categorical programming within the Hagino style seriously.
-
- The "et al." group includes Tom Fukushima who has actually implemented
- such a CDT programming language (CHARITY) with initial and final datatypes,
- and myself, whose thesis - "Categorical Programming with Functorial
- Strength" that expounds on much of the categorical underpinnings of this
- language - will be completed within the next month or so. The parallels
- with Malcolm's syntactic calculus are very strong (not a pun) and the
- variety of datatypes available to the programmer is quite reasonable
- for much practical programming (e.g. database applications).
-
- - Dwight Spencer
-
- Oregon Graduate Institute --> Trinity College, Hartford, CT
-