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iOS Error Handling in Swift Error Handling Handling Errors

Alex Wride
Alex Wride
4,420 Points

Handling Errors Code Challenge

Hello community,

Stuck on this challenge. Point me in the right direction if possible. Otherwise, a solution to study works great too.

Thanks in advance :)

error.swift
enum ParserError: Error {
  case emptyDictionary
  case invalidKey
}

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

  func parse() throws {
     guard let value = data?["someValue"] else {
            throw ParserError.emptyDictionary
        }
        guard let key = data?["someKey"] else {
            throw ParserError.invalidKey
        }
  }
}

let data: [String : String?]? = ["someKey": nil]
let parser = Parser(data: data)
Michael Hulet
Michael Hulet
Treehouse Moderator 47,822 Points

Please note to any who answer: Answers that include working code with little to no explanation are against the community guidelines and will be redacted until the answer is edited to also include a solid explanation of why the code works