Edited Transcript Last time we learned the if-else, Let’s expand on that knowledge with more about if-else.In our code so far, we have several nested comparisons. Each makes only one comparison. What if I wanted to look at two conditions, not one? For example, what if pizzas of sizes 14 to 18 were marked on…

Transcript We’ve been using constants and literal up to now. However, you will want values to change as you build apps. For that, you need variables. Let’s look at variables and how to use them.  We’ll start with the same code from the last lesson. Try adding to the bottom of the code You’ll get…

We’ve used integers and strings so far in our code for values. We use each differently, and their use we call a type. Numbers like integers are a type, as are strings as text. Swift is a strongly typed language. To best use Swift, you need to understand the basic types.  We’re going to use…

Transcript We’ve made our basic wireframe, now let’s begin to add  more content. The images we have now wont tell us a much as true images. So we’ll load some images into the icon , the header and the menu items using two placeholders.  You’ll find like to the photos here and here. Download them…

Transcript We have the wireframe for the menu page of our takeout order app, but we have only one menu Item, and we probably want more than that. How can we get more items?  Let’s find out.  Swift and SwiftUI are a modular language. You build small pieces that do one thing and then and…

Transcript We’ve learned some basics of Swift and some fundamental SwiftUI objects. Unfortunately what we’ve done as a demo doesn’t look so nice. So let’s get together the beginnings of a fun app to order pizza! I’ll start by closing our current app. Then I’ll make a new app. I’ll  pop out for a second…

Transcript We have Identifiers for values we can use  repeatedly.  If you think of  constants as nouns we’ll need some verbs to do actions. Swift has actions we can use repeatedly.  We call these  functions. Here’s a simple example. Add this to your code just below the thing2 declaration.   This is a function. A…

Transcript We’ve got an application started, but it is very hard to change to do anything with.  If I wanted something other than guitars, such as a lightbulb or tv, I’d have to change the entire program.  Swift playgrounds and its bigger brother on the Mac, Xcode,  have special programs called compilers and interpreters. These…