Re: [Haskell-cafe] small step evaluation as an unfold?

2007-01-23 Thread John Meacham
On Tue, Jan 23, 2007 at 10:25:27PM -0500, Steve Downey wrote: > (overall context - working through TaPL on my own, reimplemnting > typecheckers in haskell) > the type checkers all follow the same pattern, in ocaml they throw an > exception when the small step fails, which may mean taking another >

[Haskell-cafe] small step evaluation as an unfold?

2007-01-23 Thread Steve Downey
(overall context - working through TaPL on my own, reimplemnting typecheckers in haskell) the type checkers all follow the same pattern, in ocaml they throw an exception when the small step fails, which may mean taking another branch in the eval, but that that sub expression has hit bottom. it is