RE: [Haskell-cafe] Impredicative Types

2010-11-19 Thread Simon Peyton-Jones
Yes, impredicative types are still in, but in a simpler form than before, along the lines of QML http://research.microsoft.com/en-us/um/people/crusso/qml/ I have been too busy with getting the new type checker working to describe or document it. Notably, I have not yet added syntax for QML's ri

RE: [Haskell-cafe] Impredicative Types

2010-11-19 Thread Simon Peyton-Jones
Cafe; glasgow-haskell-users@haskell.org | Subject: Re: [Haskell-cafe] Impredicative Types | | Awesome, thank you. :-) One more question out of pure curiosity, if | you have the time: What is allowing you to keep them in? I thought | that the problem was that they made a mess that touched