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iOS Closures in Swift 2 Closure Expressions Using Closure Expressions

I can't pass this question in closure

Am I doing something wrong ?

func doubleValue(i: Int) -> Int {
    return i * 2

let doubler = doubleValue
let doubledValues = [1,2,3,4].map(doubler)

doubleValue.map{ [1,2,3,4] * 2}

1 Answer

Anthony Kim
Anthony Kim
4,010 Points

how about change like this?

doubleValue.map{ [1,2,3,4] * 2} -> doubleValue.map({ (i: Int ) -> Int in return i * 2})