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iOS Object-Oriented Swift 2.0 Classes Classes with Custom Types

Posted by Elijah Florence
Elijah Florence
Courses Plus Student 3,225 Points

It says Springfield cannot be used on type Business. But I thought Business was a class of both type name and location.

Maybe I am just not doing it right. i tried to just put self.location = (location: x, location: y) or something like that in the initializer so I didn't have to make an instance of location. I would think either way would work. Just not sure what Im not getting here

classes.swift 
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 springfield: Location = Location.init(latitude: 13, longitude: 13)
let someBusiness = Business.init(name: "LevicorP", location: springfield)
}

1 Answer

Derek Scollon
Derek Scollon
8,422 Points
Derek Scollon
Derek Scollon
8,422 Points

It looks as if you are very close on this one. If you look at your two lines of code...

let springfield: Location = Location.init(latitude: 13, longitude: 13)
let someBusiness = Business.init(name: "LevicorP", location: springfield)

...and carefully check the curly brackets, you'll see these two lines are inside the definition of the Business class. Move them outside and it should work. If you indent the code inside curly brackets (XCode should do this for you), it makes this more obvious.

Elijah Florence
Elijah Florence
Courses Plus Student 3,225 Points

It still says the following: swift_lint.swift:17:62: error: instance member 'springfield' cannot be used on type 'Location' let someBusiness = Business.init(name: "LevicorP", location: springfield)}

Elijah Florence
Elijah Florence
Courses Plus Student 3,225 Points

It still says the following: swift_lint.swift:17:62: error: instance member 'springfield' cannot be used on type 'Location' let someBusiness = Business.init(name: "LevicorP", location: springfield)}

Derek Scollon
Derek Scollon
8,422 Points

It's working for me using this code...

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 springfield: Location = Location.init(latitude: 13, longitude: 13)
let someBusiness = Business.init(name: "LevicorP", location: springfield)

From the errors you're posting, it sounds as if you still have those last two lines inside the Business class.