Swift 4 Recipes: Hundreds of Useful Hand-picked Code Snippets

© Yanis Zafirópulos 2019

Yanis ZafirópulosSwift 4 Recipeshttps://doi.org/10.1007/978-1-4842-4182-0_10

10. Numbers and Dates

Yanis Zafirópulos¹ 

(1)

Granada, Spain

 

Numbers or numeric values, and dates, are one of the most common things a programmer has to deal with daily.

In this chapter, we’ll explore different ways that we can handle numbers in Swift, convert to and from different units, or make use of all of Swift’s mathematical capabilities and also see how we can make our life easier when working with date objects.

10.1 Calculate average of elements in array

Problem

I want to calculate the average of all elements in a given number array.

Solution

First, we initialize our example array.

let numbers = [1, 2, 3, 4, 5, 6]

Then, we calculate the average.