I used xcode 10.1   enum PriceType {     case cny     case usd } extension PriceType: ExpressibleByStringLiteral {     init(stringLiteral value: String) {         self.init(string: value)     }     init(unicodeScalarLiteral value: String) {         self.init(string: value)     }     init(extendedGraphemeClusterLiteral value: String) {        …

I am having trouble with my database for firebase. I have my app set up so that when the user opens the app it takes the to phone auth then it sends them a code using text message, and takes them to the next view…

I have a dictionary that I am trying to append information to but instead of appending to it just deletes the previous information. The dictionaries are in two different scopes. The dictionary name is personal info. They are on line 40 and 47. I tried…

hi guys I really thought about This question, but I couldn’t answer that Could you please tell me what is the solution or how i can solve it?   in Intro to App Development Curriculum lesson 14   Exercise: Counting Votes You’re implementing a poll…