Lecture 1: Intro to SwiftUI

Question 1

What is the framework/package we must import for any SwiftUI functionality to work? (Full syntax)

Answer 1

import SwiftUI

Question 2

What is a Struct?

Answer 2

A data structure

Question 3

In SwiftUI, what must any Struct that wants to act as a view contain?

Answer 3

It must declare a variable, body, which acts as a view.

Question 4

What do we call a variable which is declared within a struct?

Answer 4

A property. It is a property of the struct it is declared within.

Question 5

What is the syntax to create a Struct of type View, named ContentView in SwiftUI?

Answer 5

struct ContentView: View {}

Question 6

What is the syntax to create the body variable (view) within this struct?

Answer 6

var body: some View {}

Question 7

If we declare a var body of type ‘some View’, what must this variable/function return?

Answer 7

It must return something of type view. In SwiftUI this could be Text(“”), Image(UIImage…” etc.

Question 8

What is the syntax to create our struct view, with our body var, and have it return the text “Hello, World!”?

Answer 8

import SwiftUI

struct ContentView: View {
var body: some View {
Text("Hello, World")
}
}