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iOS Object-Oriented Swift 2.0 Classes Classes with Custom Types

Jake White
Jake White
2,108 Points
Posted by Jake White
Jake White
2,108 Points

what am i doing wrong?

I don't understand

classes.swift 
struct Location {
            let latitude: Double
            let longitude: Double
}

            class Business {
                let name: String
                var location: Location
                init(name: String, latitude: Location, longitude: Location) {
                    self.name = name
                    self.location = Location(latitude: <#T##Double#>, longitude: <#T##Double#>)
                }
}
let someBusiness = Business(name: "name", latitude: Location, longitude: Location)

2 Answers

Alexander Smith
Alexander Smith
10,476 Points
Alexander Smith
Alexander Smith
10,476 Points

Should be modeled as such

struct Location {
    let latitude: Double
    let longitude: Double
}
class Business {
  let name: String
  let location: Location
  init(name: String,location: Location) {
    self.name = name
    self.location = location
  }
}

let someBusiness = Business(name: "a business",location: Location(latitude: 2.2, longitude: 1.1))

I'd be happy to answer any questions regarding how any of this works

Ben Harris
Ben Harris
1,683 Points
Ben Harris
Ben Harris
1,683 Points

Hi Alexander, I had a little bit of a problem with the last part regarding how to pass the latitude and longitude. Could you please just explain further why you have to write the location type? Is that because its referring to a structure?

Thanks :)

Alexander Smith
Alexander Smith
10,476 Points
Alexander Smith
Alexander Smith
10,476 Points

That's exactly correct. Even though a struct doesn't need a custom init method since it has one automatically, you still need to call it like one for implementation purposes. Also since location is of type Location, implementation is necessary.