Swift Functions — Handling Errors with do, try, and catch 🚨

📰 Dev.to · Gamya

Learn to handle errors in Swift functions using do, try, and catch to write more robust code

intermediate Published 20 Jun 2026

Action Steps

Create a Swift function that may throw an error using the throws keyword
Use a do block to wrap the function call that may throw an error
Apply a try expression to attempt to execute the function
Catch any errors that occur using a catch block and handle them appropriately
Test the function with different inputs to ensure error handling works correctly

Who Needs to Know This

iOS developers and software engineers can benefit from this knowledge to improve their code's reliability and error handling

Key Insight

💡 Using do, try, and catch in Swift allows you to write more robust code that can handle and recover from errors

Key Takeaways

Learn to handle errors in Swift functions using do, try, and catch to write more robust code

So far in this series, our functions have either worked correctly or... not really had a way to say...