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_7

7. Strings

Yanis Zafirópulos¹ 

(1)

Granada, Spain

 

In programming, a string is a way of referring to a sequence of characters, either as a literal constant or as a variable. Swift provides us with lots of functions to interact with them. In this chapter, we will dive into the Swift library for Strings and explore different ways to manipulate them efficiently.

7.1 Append character to string

Problem

I want to append a character to an existing string.

Solution

Let’s initialize our Character.

let char : Character = "!"

First approach: Using the += operator.

var first = "Hello World"

first += String(char)

print(first)

Second approach: Using the append method .

var second ...