Data.Monoid.First and Data.Monoid.Last

Louis Wasserman wasserman.louis at gmail.com
Sun Jan 9 21:34:46 CET 2011


Is there a reason that Data.Monoid.First and Data.Monoid.Last aren't also
instances of Functor, Applicative, Alternative, Monad, MonadPlus?  I find
those instances quite useful.

Louis Wasserman
wasserman.louis at gmail.com
http://profiles.google.com/wasserman.louis
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