Learn SwiftUI (Day 8/100)

Swift

• functions with throw Exceptions
  

import Cocoa

enum PasswordError: Error, LocalizedError {
    case TooShort
    case Obvious

    var errorDescription: String? {
        switch self {
        case .TooShort:
            return NSLocalizedString("Password is too short", comment: "Too short")
        case .Obvious:
            return NSLocalizedString("Password is too obvious", comment: "Obvious")
        }
    }
}

// although defined with `throws`,
// this function doesn't have to throw an exception
func checkPassword(_ pwd: String) throws -> Bool {
    if pwd.count < 6 {
        throw PasswordError.TooShort
    }
    if pwd == "123456" { …

case defined error function functions import learn password return swift swiftui switch var