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iOS Error Handling in Swift Error Handling Handling Errors

Make sure you're calling the parse method

am I calling Houston?

enum ParserError: Error {
  case emptyDictionary
  case invalidKey

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

  func parse() throws {

  guard let someData = data else { 
  throw ParserError.emptyDictionary 

guard someData.keys.contains("someKey") else { 

throw ParserError.invalidKey 


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

do {

let parse = try parse(from: data)

} catch {

print("not that one mate!")

1 Answer

thks mate