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_8

8. Arrays and Sets

Yanis Zafirópulos¹ 

(1)

Granada, Spain

 

In programming, an array or a set is nothing but a collection of items/objects – in the case of arrays, also of the same type. Swift, apart from allowing us to store our object in an array or a set, offers us a wide range of functions and methods to manipulate them. In this chapter, we’ll explore the vast capabilities of the Swift libraries and find ways to make the most out of our object collections.

8.1 Append array to array

Problem

I want to append an array to an existing array.

Solution

Let’s initialize our array.

var a = [1,2,3]

var b = [4,5,6]

And append the new array.

a += b

Let’s print out the ...