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_12

12. Web, Files, and System

Yanis Zafirópulos¹ 

(1)

Granada, Spain

 

There is virtually no solid application that doesn’t need some level of file access and/or web access nowadays.

In this chapter, we’ll be looking at what Swift offers us and how we can easily play with files, read/write to them, retrieve useful information from our user’s system, and even take it one step further and interact with the WWW.

12.1 Check if file exists

Problem

I want to check if a specific file exists.

Solution

import Foundation

Let’s set our file path.

let path = "tests/hello.swift"

And check if it exists.

if FileManager.default.fileExists(atPath: path) {

      print("Yes, the ...