Cannot create class object or array of class objects - swift

Question

I'm working on a project thatand am simply trying to create a object instance of a simple custom class:
import Foundation
class Set {
private var gam1: Int!
private var gam2: Int!
init (gam1: Int, gam2: Int) {
self.gam1 = gam1
self.gam2 = gam2
}
//returns set info as array
func getStats () -> [Int] {
let arr = [gam1!, gam2!]
return arr
}
}
The class simply stores a few variables for use later and I want an array of such objects to store several values. However, when I try to create a n instance of the class in a different class I get errors:
import Foundation
class AnotherClass {
var mySet = Set(gam1: 6, gam2: 5) //error 1
//array of set objects
var setArray = [Set]() // error 2
//returns array of set objects
func getSets () -> [Set] { //error 3
return setArray
}
}
The errors state:
Cannot find an initializer for type 'Set' that accepts an argument list of type '(gam1: Int, gam2: Int)'
Cannot invoke initializer for type '[Set]' with no arguments
and
Reference to generic type 'Set' requires arguments in <...>
Any ideas of what the issue is here? could the 'Set' name of the class be conflicting with a reserved keyword?
Many thanks,
Kw

Answer 1

The issue that you are having is due to the naming conflict between Set in the Swift standard library and the one you defined.
This is never a good idea. Instead, give it a more descriptive name (and one that doesn't conflict with anything else). For instance, call it gamHolder and initialize it gamHolder(gam1: <an int>, gam2: <another int>).
Also, if you have defined variables inside the init function they do not need to be forced unwrapped optionals.
For example:
class myClass {
var myInt: Int
init(anInt: Int) {
myInt = anInt
}
}

Answer 2

You defined 2 parameters in your init method (since gam1 and gam2 are not optional). So, you have 2 solutions:
1 - You add parameters into your init call (like this):
var mySet = Set(gam1: 1, gam2: 2)
2 - You change gam1 and gam2 to optionals and you add a zero parameters init:
class Set {
private var gam1: Int?
private var gam2: Int?
init() {
}
init(gam1: Int, gam2: Int) {
self.gam1 = gam1
self.gam2 = gam2
}
// returns set info as array
func getStats() -> [Int] {
let arr = [gam1!, gam2!]
return arr
}
}
So, you will be able to call it like this: var mySet = Set()
Also: be careful: Set is a class used in the Swift standard library. It's never a good idea to use same class names than Swift Standard Library. A name like TenisSet would be better.
Edit:
Here is a final working example with a renamed class:
class TenisSet {
private var gam1: Int?
private var gam2: Int?
init() {
}
init(gam1: Int, gam2: Int) {
self.gam1 = gam1
self.gam2 = gam2
}
// returns set info as array
func getStats() -> [Int] {
let arr = [gam1!, gam2!]
return arr
}
}
class AnotherClass {
var mySet = TenisSet()
// array of set objects
var setArray = [TenisSet]()
// returns array of set objects
func getSets() -> [TenisSet] {
return setArray
}
}