Re: [Haskell-cafe] Looking for a more functional way to do this

Jefferson Heard wrote:

Adrian, my understanding is that it's not that simple, because I need to preserve the state between calls to GLUT's callbacks, which all return IO ().

Then maybe see: http://www.haskell.org/pipermail/haskell-cafe/2007-July/028501.html

2008/8/6 Adrian Neumann :

...

There is the State Monad which is build just for that kind of purpose, I believe:

http://www.haskell.org/all_about_monads/html/statemonad.html

That would safe you from passing around the State

Jefferson Heard schrieb:

...

Working with HOpenGL and GLUT,

[snip] Claude