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iOS Error Handling in Swift 2.0 Error Handling Throwing Errors

Alex Tenser
Alex Tenser
1,999 Points

Error Handling Quiz

The question is as follows: "For this task, let's get some practice throwing an error. You've been provided with an error object in the editor. Errors are typically thrown from inside functions so let's start by creating a function that can throw. Name this function lend. It takes no parameters and has no return type."

The error I'm getting is that there is an expected type for the function return. Not sure what i'm doing wrong here. Thanks in advance!

error.swift
enum BookError: ErrorType {
  case IncorrectTitle
}

func lend() throws -> {

}

1 Answer

Cindy Lea
PLUS
Cindy Lea
Courses Plus Student 6,485 Points

Good try. They are looking for something like this:

enum BookError: ErrorType { case IncorrectTitle }

func lend () throws { throw BookError.IncorrectTitle }

Alex Tenser
Alex Tenser
1,999 Points

Ah, great! Thanks for that!