Swift: Introduction to Loops

Introduction to Loops in Swift:

Before getting into actual coding, let’s have a brief introduction to loops in Swift. We do a lot of things every day that we don’t even realize we’re doing. For example, when we cook, we may need to chop up our ingredients. We chop and chop until all of our ingredients are the appropriate size and we stop chopping at this point. We can divide our chopping task into three sections:

  • Start condition: We’re all set to cook.
  • Repetition: We’re currently chopping.
  • End condition: We’ve finished chopping all of the remaining ingredients.

A loop is a programming term for the entire process with a starting condition, repetition, and ending condition. We iterate (perform repeating tasks) with a collection of items in a loop. In the example above, our collection would be our ingredients, and the iteration would take place as we chop them up.

Some collections are small, such as a short string, while others are large, such as a range of numbers from 1 to 10000000! But don’t worry: loops enable us to handle both ends of the spectrum with ease. This simple but effective concept saves us a lot of time and makes working with large amounts of data much easier.

We’ll learn about the different types of loops in Swift and how to use them in our programs in this lesson.

Helpful Tools:

Here are some useful tools to help you along your journey!

Setting up an IDE (Integrated Development Environment) can be difficult for beginners. The Online Compiler will enable you to run your code inside your browser without the need to install an IDE. If you need a more detailed explanation of a specific topic, the best place to find answers is in the Official Documentation.

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