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Jeff Ripke
41,989 PointsNow that you have good error handling code, let's call the parse method. Remember that since this is a throwing function
Stuck on this question, need some expert guidance.
enum ParserError: ErrorType {
case EmptyDictionary
case InvalidKey
}
struct Parser {
var data: [String : String?]?
func parse() throws {
guard let parsedData = data else {
throw ParserError.EmptyDictionary
}
guard parsedData.keys.contains("someKey") else {
throw ParserError.InvalidKey
}
}
}
let data: [String : String?]? = ["someKey": nil]
let parser = Parser(data: data)
do {
let parser = try Parser(data: data)
parser.parse()
} catch ParserError.EmptyDictionary {
}
1 Answer
macserwicki
8,072 PointsYou're missing the "try" keyword. You need it because the "parse()" method "throws".
enum ParserError: ErrorType {
case EmptyDictionary
case InvalidKey
}
struct Parser {
var data: [String : String?]?
func parse() throws {
guard let parsedData = data else {
throw ParserError.EmptyDictionary
}
guard parsedData.keys.contains("someKey") 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 {
}