How to Set Struct Values Outside the Class?

Here is how I use it (and works perfectly):

class GlobalData {

    class var sharedGlobal : GlobalData {
        struct Singleton {
            static let instance = GlobalData()
        }
        return Singleton.instance;
    }     

    var firstVar : Int = 1

}

Then I just call :

    GlobalData.sharedGlobal.firstVar = 10

anywhere in code

My singleton class works fine for settings normal variables likle that. It's when i want to set something thats inside a struct I'm not sure how to do it properly. Like in the code I put, if i want to set "name" which is inside a struct (which is inside another struct) in the singleton class.

I think the confusion here is that Swift structs are not like C structs.

— In C, a struct is a data item with a value, essentially a kind of a variable.

— In Swift, a struct is a type, not a data item.

So, in your SIngleton class, you declared the struct type named "bigStruct", but you really meant to declare a variable (well, an instance property) named "bigStruct". You would fix your code something like this (using initial caps for types, initial lowercase for variables and properties):

class SharingManager {
    struct BigStruct { 
        struct SmallStruct { 
            var name = String()
        }
        var smallStruct: SmallStruct

   }
    static let sharedInstance = SharingManager() 
    var bigStruct: BigStruct
}

Now you can refer to the BigStruct value like this:

let sm = SharingManager.sharedInstance 
… sm.bigStruct …
… sm.bigStruct.smallStruct.name …
… etc …

With a struct inside :

    var gclock = GCL()

where

class GCL {
    var interLock : [Int: Set<Int>]


// With all the needed init


// I define functions as:
    func askToChange(forID: Int) {
            interLock[0]!.insert(forID)  // Just an example
     }

}

This is called like this :

GlobalData.sharedGlobal.gclock.askToChange(forID: 1)

I looked around somemore and tried this and it seems to work -

I added this to the singleton class

var big = SharingManager.bigStruct()
var small = SharingManager.bigStruct.smallStruct()

Then to use it I just have to use -

let sm = SharingManager.sharedInstance

sm.small.name = "this is a name"
print(sm.small.name) //this printed the coorect value I just set

Thanks for th explnation, I understand what you mean.

I tried this but then i get an error for the line "SharingManager cannot be constructed because it has no accessible initializers"

static let sharedInstance = SharingManager()

I looked around a little more and tried this (answer in post below) and it seems to be working properly so far.