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Learn Functional Programming in Haskell

Currying and Uncurrying

Learn how to transform functions into their curried or uncurried forms.

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Currying functions with more arguments

The technique of currying is not limited to functions with two arguments. If we have a function with three arguments like this:

Haskell
isTriangleTuple :: (Double, Double, Double) -> Bool
isTriangleTuple (alpha, beta, gamma) = alpha + beta + gamma == 180
main = print (isTriangleTuple (90, 45, 45))

we also can turn it into its curried form:

Haskell
isTriangle :: Double -> Double -> Double -> Bool
isTriangle alpha beta gamma = alpha + beta + gamma == 180
main = print (isTriangle 90 50 50)

and we can use a partial application with one or two arguments.

mustBeSixty = isTriangle
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