14 Dec
2003
14 Dec
'03
6:04 a.m.
On Fri, Dec 12, 2003 at 08:55:59PM +0000, Graham Klyne wrote:
At 14:17 12/12/03 -0500, Derek Elkins wrote:
This will also provide a migration path if you want a more featureful monad. (or_maybe is mplus, fail or mzero can be used for Nothing when you explicitly want to fail).
Is this or_maybe (and friends) actually defined in any of the standard libraries? (Google found only one hit, in an old IRC log.)
The or_maybe, which he's suggesting I replace with mplus, is from my code (which obviously Derek has taken a look at). It's just a little function to try one function and if it returns Nothing, then try another. -- David Roundy http://www.abridgegame.org