[Haskell-beginners] Re: (->) instance for ArrowApply and laziness

aditya siram wrote:

Heinrich Apfelmus wrote:

...

It's similar to how fix works:

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

Here various definitions of the factorial as example:

Thank you. This was incredibly helpful. -deech

Anytime. :) There's also a humorous but enlightening list of increasingly complex implementations of the factorial function: The Evolution of a Haskell Programmer. http://www.willamette.edu/~fruehr/haskell/evolution.html The version with fix corresponds to the "Boy Scout Haskell programmer". Regards, Heinrich Apfelmus -- http://apfelmus.nfshost.com