[Solved] Given the function type (Int) -> (Int) -> Int, what does this type represent in Swift? — Ans: A function that takes an Int and returns another function that takes an Int and... | Swift

Swift - Functions

Given the function type (Int) -> (Int) -> Int, what does this type represent in Swift?

AA function that takes an Int and returns an Int array.

BA function that takes an Int and returns another function that takes an Int and returns an Int.

CA function that takes two Ints and returns an Int.

DA function that takes no parameters and returns an Int.

Step-by-Step Solution

Solution:

Step 1: Analyze the nested function type
The type (Int) -> (Int) -> Int means the function takes one Int and returns another function.
Step 2: Understand the returned function
The returned function itself takes an Int and returns an Int.
Final Answer:
A function that takes an Int and returns another function that takes an Int and returns an Int. -> Option B
Quick Check:
Curried function type = A function that takes an Int and returns another function that takes an Int and returns an Int. [OK]

Quick Trick: Read from left to right: input then output, output can be a function [OK]

Common Mistakes:

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