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iOS Error Handling in Swift 2.0 Error Handling Handling Errors

Ronit Mankad
Ronit Mankad
12,166 Points
Posted by Ronit Mankad
Ronit Mankad
12,166 Points

Error!

Please help. I find this a bit complicated

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

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

  func parse() throws {
      guard (data?["key"]) != nil else {
            throw ParserError.EmptyDictionary
        }
        let includedKeys = data?.keys
        let boolAns: Bool = (includedKeys?.contains("someKey"))!
        guard boolAns else {
            throw ParserError.InvalidKey
        }
    }
}

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