On 13/11/2007, Henning Thielemann
On Tue, 13 Nov 2007, Dougal Stanton wrote:
-- int a = 3; -- int *pa = &a; ampersand :: t -> Pointer t ampersand a = Just a
What's bad about using 'ampersand' function as replacement for the constructor 'Just'?
I also wanted to use it in pattern matching but have the advantage of all the stuff already written for Maybe. (Note this was an example I made up on the spur of the moment anyway.) I'd often thought it would be nice when adapting standard data structures for specific programs. Like, data Tree a = Leaf a | Branch a [Tree a] data FS a = File a | Folder a [FS a] Once you've got one it would be nice to repurpose it with more appropriate names. Just an idea! :-) D. -- Dougal Stanton dougal@dougalstanton.net // http://www.dougalstanton.net