Create Your Own Reduce Function in Swift
There’s an Iterator…and…
Reduce makes an Array a single function that is it combines all of the given elements in an array and outputs a single value (more on that in a minute) — according to the function we give it.
How is that implemented? What do we do?
Difficulty: Beginner | Easy | Normal | Challenging
Prerequisites:
- Be able to code Swift using Playgrounds
Terminology
Array: An ordered series of objects which are the same type
Dictionary: The association between keys and values (where all the keys are of the same type, and all values are of the same type)
Reduce: A higher-order function that returns the result of combining the elements of a sequence using a closure
The Motivation
Reduce is one of the coolest higher — order functions available to us in Swift.
What if we could look about how reduce works under the hood, and perhaps mangle the functionality to be…whatever we would want it to be.
