🛡️ Swift Basics: Guard Let

A concise, runnable example of optional unwrapping with guard let in Swift

📖 Overview

guard let is Swift's tool for early-exit optional unwrapping. It safely binds an optional to a non-optional constant and requires you to leave the current scope (via return, break, continue, or throw) when the value is nil — keeping the rest of your code flat and free of nested if pyramids.

This repository is a small, runnable Swift Playground that demonstrates guard let in two common situations: unwrapping an optional function parameter, and unwrapping an optional inside a function that returns an optional. It is intended as a quick learning reference.

🔍 What it covers

• Unwrapping an optional parameter with the shorthand guard let optionalParameter else { ... } syntax.
• Providing a default nil value for an optional parameter.
• Using guard let to bail out early and return from a function.
• Combining a guard-based helper with if let at the call site to handle both the success and nil paths.
• Printing an optional's description with String(describing:).

🚀 Getting Started

git clone https://github.com/ahmetbostanciklioglu/GuardLet.git
cd GuardLet

Unzip GuardLet.playground.zip, open GuardLet.playground in Xcode, and run it (the playground executes automatically; use Editor ▸ Run Playground or press ⇧⌘↩ to re-run).

📋 Requirements

• macOS with Xcode 13 or later
• Swift 5

🧑‍💻 Author

Ahmet Bostancıklıoğlu — @ahmetbostanciklioglu · ahmetbostancikli@gmail.com

⭐ If this helped you, consider giving the repo a star!