Re: Storable tuples and what is 'alignment'?

Probably because we've no idea why you'd want to do it.

That's a pretty good reason :).

That is, for each C type you encounter, you write a custom instance.

Ah, here's the problem. There is no corresponding C type :). I'm using hMPI and need to pass around an array of arrays of int,double pairs. What I'll do is basically flatten everything out and pass the int side in one pass and the double side in another pass... Nevermind then, I was just tyring to avoid more work :) - Hal