LOL. Yeah you are correct I guess. Oh well ;-) -----Original Message----- From: Bulat Ziganshin [mailto:bulat.ziganshin@gmail.com] Sent: Thursday, August 09, 2007 7:30 AM To: Peter Verswyvelen Cc: Donn Cave; haskell-cafe@haskell.org Subject: Re[2]: [Haskell-cafe] Pure functional GUI (was "a regressive view of support for imperativeprogramming in Haskell") Hello Peter, Wednesday, August 8, 2007, 11:14:37 PM, you wrote:
To me, having an imperative background, a graphical application is just a big tree of data that evolves when events from the OS come in. (this data is NOT per se the data for the GUI element; instead use the model-view-controller design pattern) In Haskell, instead of mutating the data (as done in C/C++), a infinite stream of this tree-data is generated responding to an infinite steam of events, as in Paul's SOE book (the reactive stuff). Since most of the data can be shared, the performance impact should be minimal.
So could you please tell me more about the problem with pure functional GUIs
seems that such program will have no effects :) -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com