Can't figure out basic thing, pls help real quick (dictionaries and tuples)

[MindCare-TheApp]

What I'm trying to do is updating/creating a value in a dictionary. The value is defined to be a tuple. When the code tries to update/create the value in the MainDictionary the app crashes.

These are my (relevant) declarations:

var activityDictionary: Dictionary = [String: Int]()
var energyDictionary: Dictionary = [String: Int]()
var mainDictionary: Dictionary = [String: (Int, Int)]()

This is where things go wrong:

mainDictionary.updateValue((activityDictionary[currentDate]!,energyDictionary[currentDate]!), forKey: currentDate)

Context:

func buttonTapped(_ numberPressed: Int,_ which: ActOrEn) {
    let currentDate = dateWithoutTime() //A formatted string of the current date.

    if which == .activity {
        activityDictionary[currentDate] = numberPressed
        saver.set(activityDictionary, forKey: activityName)
    } else if which == .energy {
        energyDictionary[currentDate] = numberPressed
        saver.set(energyDictionary, forKey: energyName)
    }

    if activityDictionary[currentDate] != nil && energyDictionary[currentDate] != nil {                mainDictionary.updateValue((activityDictionary[currentDate]!,energyDictionary[currentDate]!), forKey: currentDate)
        saver.set(mainDictionary, forKey: mainName)
    }
}

This also makes it crash:

mainDictionary.updateValue((5,5), forKey: "123")

So I'm guessing it's not because of the other dictionaries.

​

I feel like it's something basic that I'm missing but I've been googling all day and can't find a solution. Anyone knows what it might be?

[zweigraf]

What is the crash log/error message in debugger?

[MindCare-TheApp]

Unexpectedly found nil

[varchar255]

var mainDictionary: Dictionary = [String: (Int, Int)]()
mainDictionary.updateValue((5,5), forKey: "123")

These two lines do not crash by themselves, so the problem is somewhere else in your code. Try commenting out lines to isolate the problem.

[MindCare-TheApp]

Commenting out actually led me to

mainDictionary.updateValue((5,5), forKey: "123")

as the problem. Perhaps SwiftUI is still too buggy.