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Mauricio Scheffer has written several articles about applicative functors in F# http://bugsquash.blogspot.com/search/label/applicative%20functors http://bugsqua

• mausch 14y ago
  ML functors aren't the same thing as the functors or applicative functors I often blog about. Difference explained here: http://stackoverflow.com/questions/2030863/in-functional-programming-what-is-a-functor http://stackoverflow.com/questions/2030863/in-functional-pro... ML functors are like parameterized modules. F# doesn't have parameterized modules, but has parameterized classes, which work quite similarly. Classes/objects can also be used as first-class modules. What .NET lacks (therefore also F#) is type constructor abstraction, which means you can't generically express the concept of a (Haskell) functor, applicative functor, monad, etc.