[Haskell-beginners] fix

[Matthew J. Williams]

hello listers, a few days ago A fellow lister sent me the following link:

http://en.wikibooks.org/wiki/Haskell/Fix_and_recursion

	The 'fix' function is interesting to say the least. There is one 
example that I've had difficulty expanding:

	fix (\rec n -> if n == 0 then 1 else n * rec (n-1)) 5
	120

	My interpretation:
	fix (\rec n -> if n == 0 then 1 else n * rec (n-1)) 5
	((\rec n -> if n == 0 then 1 else n * rec (n-1)) (fix (\rec n -> if 
n == 0 then 1 else n * rec (n-1)) )) 5
	. . .

	Yet, it does not quite explain how 'fix' does not result in infinite 
recursion.

	Sincerely
	Matthew J. Williams