Guard
Guard
Guard is a free Swift Academy lesson on CoddyKit — lesson 1 of 1. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Swift Academy learning path, one of 1 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Introduction
Hello,
In this lesson, we will learn about the guard, an expression we will use frequently.
The use of guard statement is similar to if. A guard statement is used to transfer program control out of a scope if one or more conditions aren’t met.
It helps to get rid of if statement in some situations
As an extra with respect to if, the guard statement always has its else statement, and this else statement works if the condition is met.
cont.
Unlike if, it creates constants that can be used outside the block.
It is especially used to unwrap optional ones.
In the example below, the person's dictionaries have been unwrapped and assigned to the constant name.
The name constant is used outside the block to which it belongs.
example
Let's look at the example.
guard true else {
print("Condition not met")
}
print("Condition met")Congratulations
Congratulations 🎉
In this lesson, we learned how to use guard in Swift.
See you in the next lesson.
Frequently asked questions
Is the “Guard” lesson free?
Yes — the full text of “Guard” is free to read here on the web, and the Swift Academy course includes 1 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Swift Academy course, upgrade to CoddyKit PRO.
What will I learn in “Guard”?
Guard You practise Swift Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Swift Academy?
No prior experience is required. Swift Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 1 of 1, so you can start here or from the beginning and move at your own pace.
How long does the “Guard” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Swift Academy lesson?
Yes. Every Swift Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.