Regarding the preprocesor, I've had the idea once but I guess I don't have enough time to pursue it. I'm not sure but are you implying that you want to volunteer to write a Haskell preprocessor that emits FC++ code? Possibly using Spirit? That would be awesome!
I do not think it would be worthwhile to use Haskell as the input
language of the preprocessor, because then you could just use the ghc
Haskell compiler. Also, even though I quite like Haskell and I have
been using it for some time, I found it a bit too lazy for the
my applications involving large-scale numeric computing where
efficiency and control over memory management is necessary. I found
C++ to be a better language in that aspect.
Therefore, I propose to use the best from both worlds, the Haskell
type system for defining function signatures and C++ for writing the
function bodies. The first step could be just a very stupid
preprocessor to save some typing. I do not really have a clear idea at
the moment, it needs to be thought out well, it could be something as
simple as:
@fun plus :: A a -> B b -> A result
@{
@let c = a+b // type automatically deduced
return static_cast<A>(c) ;
@}
which would provide a polymorphic functor plus.
As for me volunteering to write the preprocessor, I am obviously
tempted, but very busy at the moment and also I think it might be
better to wait a month or two whether there is any outcome from the
cross fertilization of Spirit/FC++/....
Cheers,
Jan
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Jan Kybic