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iOS Error Handling in Swift 2.0 Error Handling Handling Errors

Posted by Todd Stacy
Todd Stacy
5,816 Points

need help handling errors

i guess i missed something, but i have no idea how to go about this. ive been going back in the videos and trying to figure it out, but i cant.

error.swift 
enum ParserError: ErrorType {
  case EmptyDictionary
  case InvalidKey
}

struct Parser {
  var data: [String : String?]?

  func parse() throws {

      if data == nil {
          do {
              ParserError.EmptyDictionary
          }
       }   
      guard let key = data["someKey": nil] else {
        throw ParserError.InvalidKey
      }



  }
}

let data: [String : String?]? = ["someKey": nil]
let parser = Parser(data: data)

1 Answer

Steven Deutsch
Steven Deutsch
21,046 Points
Steven Deutsch
Steven Deutsch
21,046 Points

Hey Todd Stacy,

There are quite a few ways to solve this problem. You can take a look at a previous response of mine. Maybe you will find it of some use.

https://teamtreehouse.com/community/error-handling-2

Good Luck

Todd Stacy
Todd Stacy
5,816 Points

it helped a lot! thank you so much!