Groovy: Closure: Currying

Currying is a process of transforming multi argument functions into a function that takes fewer arguments by fixing some values, named for the British mathematician and logician Haskell Curry.

Example

def sum = {a, b -> a + b}

def incByOne = sum.curry(1)

As you see above snippet, I defined the function incByOne by fixing the first argument of closure ‘sum’ to 1.

HelloWorld.groovy

def sum = {a, b -> a + b}
def incByOne = sum.curry(1)

def result = incByOne(10)

println "result : $result"

Output

result : 11

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