Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Error Handling in Swift Error Handling Throwing Errors

Henrik Vendelbo
Henrik Vendelbo
2,165 Points

not a throwing function

I've tried the above with and without the throw but it isn't accepted as a function that can throw without params and return type. Huh?

enum BookError: Error {
  case incorrectTitle

func lend() throws -> Void {
  throw BookError.incorrectTitle

2 Answers

Stuart Wright
Stuart Wright
41,100 Points

Your code looks correct to me, and I can't get it to pass either (with or without the throw). Seems something might be wrong with the challenge here.

Remove the "-> Void" and it works.

func lend() throws {