On Fri, 24 Nov 2000, Jason Stokes wrote:
I very much doubt that a "pure" Haskell (ie, a pure functional language) is a marketable proposition, but certainly "impure" functional languages or languages with heavy functional aspects (ML, Lisp, Erlang etc.) which retain imperative elements have the potential to break through and start a resurgence of functional techniques in the commercial world. Before that happens people must become disillusioned with Java, C, C++ and other mainstays of the commercial developer, of course.
This is probably stating the obvious but... I'm not sure that impure features are necessary if you are thinking of using Haskell as a component language -- a component language which is functional -- which will be used for parts of systems where it is believed to be appropriate. I'm working on an industrial project in a university setting and (once I get this damned PhD written up) will be working on an image processing/archiving system. I plan to use Haskell as a language to be called from the main C++ code for those algorithms which are easy to code in Haskell but not in C++. I doubt that I'll be using anything which isn't pure functional (e.g., monads) simply because I can't conceive of any problem where using them wouldn't mean the particular algorithm wouldn't be better written in C++. I've been criticised (possibly rightly :-) ) for saying that part of the reason why functional languages aren't more widely used is that people who understand C regard them as weird. (This isn't theory--this is what the people I work with say to me; I may just work with atypical people :-) ) It seems much more likely that they'll become popular if they can enroach from being component languages, rather than expecting a full beach-head of whole systems being implemented entirely in functional languages. Of course, I'm wrong about lots of things... ___cheers,_dave________________________________________________________ www.cs.bris.ac.uk/~tweed/pi.htm|tweed's law: however many computers email: tweed@cs.bris.ac.uk | you have, half your time is spent work tel: (0117) 954-5250 | waiting for compilations to finish.