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iOS Error Handling in Swift 2.0 Error Handling Throwing Errors

Brian Uribe
Brian Uribe
3,488 Points

How am I throwing wrong?

I tried throwing the whole enum and then the book error. I'm not sure what i'm missing. Also, what is the difference between throws, and throw, in Swift?

enum BookError: ErrorType {
  case IncorrectTitle

func lend () throws {

throw -> BookError


1 Answer


func lend() throws {
  throw BookError.IncorrectTitle

Basically, throws says the function can throw an error. throw is used to do the throwing.