9 Jun
2011
9 Jun
'11
12:26 p.m.
Christopher Howard wrote:
Is there a Haskell package out there that provides a "trinary" version of Either, i.e., allowing three values instead of two? I can see how that would be very handy. Defining one obviously wouldn't be difficult, but it would be helpful if someone else had already developed Monad bindings and other related stuff.
Antoine Latter wrote:
What would the Monad operations do?
It appears that the equivalents of Either (Either a b) c and Either a (Either b c) could be equally useful. So perhaps both should be provided inside newtype wrappers. -Yitz