Lesson 1

Playground Basics

What you’ll build

  • A programming setup that you can type in and get answers to basic calculations

    • What you’ll LEARN

  • How to type and change code in a playground
  • Where to look for the results of your work
  • How to add notes that will help you remember what your code means
  • What it looks like if something goes wrong

    • What you’ll wonder

    What else can I do with a playground?

    KEY Vocabulary

  • Comments
  • Comment out
  • Error
  • Playground
  • Results sidebar
    •

    Playground Basics

    In playgrounds, you can experiment with programming ideas without building an entire app. You’ll write some code, watch it run, think about it ​
a bit, change some lines, and watch it run again. Down the road, you can turn your successful experiments into a fully featured app, but for now, just play—and learn.

    GO BUILD

    Open the “PlaygroundBasics.playground” file in the folder you downloaded and follow the directions.