🧩 Swift Basics: Failable Initializers

A concise, runnable Swift Playground exploring initializers that can return nil.

📖 Overview

A failable initializer (init?) lets a type reject invalid input during construction by returning nil instead of a fully formed instance, which is why a call to it produces an optional. This repository is a small, runnable Xcode Playground that demonstrates the concept with two minimal examples: a custom class that validates its input inside init?, and Swift's built-in failable Bool(_:) string initializer. It is meant as a concise learning reference rather than a full app.

✨ What it covers

• Declaring a failable initializer with init? on a custom class.
• Returning nil from an initializer when a validation condition is not met.
• How a failable initializer produces an optional instance at the call site.
• Swift's built-in failable Bool(String) initializer, which yields nil for anything other than "true" / "false".

🚀 Getting Started

git clone https://github.com/ahmetbostanciklioglu/FailableInitialize.git
cd FailableInitialize
unzip FailableInitialize.playground.zip
open FailableInitialize.playground

Open the .playground in Xcode and press Command-R (or let it run) to see each line evaluate live in the results sidebar.

📋 Requirements

• Xcode 13 or later
• Swift 5
• iOS Playground target

🧑‍💻 Author

Ahmet Bostancıklıoğlu — @ahmetbostanciklioglu · ahmetbostancikli@gmail.com

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