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Start your free trialThomas Caldwell
2,156 PointsI don't know what's wrong
I can't figure out why my code isn't working
enum ParserError: Error {
case emptyDictionary
case invalidKey
}
struct Parser {
var data: [String : String?]?
func parse() throws {
if let unwrappedData = data {
if unwrappedData.keys.contains("someKey") {
} else {
throw ParserError.invalidKey
}
} else {
throw ParserError.emptyDictionary
}
}
}
let data: [String : String?]? = ["someKey": nil]
let parser = Parser(data: data)
do {
let wrong = try Parser.parse()
} catch ParserError.emptyDictionary {
print("No dictionary")
} catch ParserError.invalidKey {
print("Invalid key.")
} catch {
print("woops")
}
1 Answer
Jeff McDivitt
23,970 PointsYou have a few errors that I think you will see the mistakes once you view the correct code
enum ParserError: Error {
case emptyDictionary
case invalidKey
}
struct Parser {
var data: [String : String?]?
func parse() throws {
guard let data = data else {
throw ParserError.emptyDictionary
}
guard data["somekey"] != nil else {
throw ParserError.invalidKey
}
}
}
let data: [String : String?]? = ["someKey": nil]
let parser = Parser(data: data)
do {
let parser = try Parser(data: data)
try parser.parse()
} catch ParserError.emptyDictionary(let description) {
print(description)
}
catch ParserError.invalidKey(let description) {
print(description)
}