Re: [Haskell-beginners] Search for docs on operator '<+>'.

"Allen S. Rout" wrote:

Google seems to barf on '<+>'. I've found a haskell "list of operators", and it's not mentioned.

Could some kind soul point me at documentation for this thing?

This is the combination operator from the ArrowPlus type class for arrows, which can be combined in a monoidic fashion. It corresponds to (<|>) from the Alternative type class and in fact you can give a trivial Alternative instance for every arrow that is both ArrowPlus and ArrowZero. Reasonable laws would be: zeroArrow <+> a = a <+> zeroArrow = a But I don't think that's official. Greets, Ertugrul -- nightmare = unsafePerformIO (getWrongWife >>= sex) http://ertes.de/