Can I use a String variable to Chose which Int I want to effect? C#

[RainColt]

Im really new to coding and I've got like 40 int variables that I want to be able to manipulate on a button press but I don't want to write like 40 if statements to change them, I've simplified it down to 3 in the example but,

Can I use the CurrentInt String within the Maths() method to chose what int variable I want to affect without like 100 if statements? 

 

It is code running in UnityEngine but I feel like this problem is more or less general coding than anything Unity specific. 

 

public Button ClassOption1, ClassOption2, ClassOption3;
int Comp, Eleg, Pres;
public void ButtonOptions()
{
switch (CurrentButton)
        {
         //Sends a string to Maths() method on button press
            case "BUTTON1":
                ClassOption1.onClick.AddListener(() => Maths("Comp"));
                ClassOption2.onClick.AddListener(() => Maths("Eleg"));
                ClassOption3.onClick.AddListener(() => Maths("Pres"));
                break;
}
 
public void Maths(string CurrentInt)
    { 
    int [insert Variable name here] +=1;
   ///Summary
   ///can I use the CurrentInt String to chose what variable to affect without using like 40 if
   ///statements?
   ///Summary
   
    }

 

[RainColt]

1 hour ago, CUDAcores89 said:

-Snip-

I'll take that as a Probably not.

But I got on the Unity Forums was 

 

int i;

}

if(int.TryParse (String, out i)) 

{

so Imma look into that and see what I can work with. Don't have great hopes.

[WereCatf]

There are a whole lot of different ways, but using a reference to the variable might be the easiest for a beginner to grasp and play with:

public Button ClassOption1, ClassOption2, ClassOption3;
int Comp, Eleg, Pres;
public void ButtonOptions()
{
switch (CurrentButton)
        {
         //Sends a string to Maths() method on button press
            case "BUTTON1":
            	//Instead of giving Maths() the value within the variable, we instead
                //give the "address" to the variable, so Maths() can directly modify
                //the variable itself
                ClassOption1.onClick.AddListener(() => Maths(ref Comp));
                ClassOption2.onClick.AddListener(() => Maths(ref Eleg));
                ClassOption3.onClick.AddListener(() => Maths(ref Pres));
                break;
}

//Don't forget the "ref"-keyword here!
public void Maths(ref int intVariable)
    { 
    intVariable += 1;
    }

 

I recommend reading https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/ref

[wasab]

You can use a design pattern such as the state pattern. That will eliminate if and else but still, you need to code for each neccesary cases. However, unlike a hundred if and Else or switch statements, state pattern produces much cleaner, coherent, and comprehensible code which is easy to maintain. 

https://en.m.wikipedia.org/wiki/State_pattern

 

I actually made a reference guide on software design patterns based on materials I learn from a recent college programming course. You can take a look

https://github.com/GAO23/CSE_219_Final_Project/blob/master/README.md

[Mira Yurizaki]

I think I had a similar situation when building an app as an exercise. The problem was I had 26 buttons that needed to manipulate a specific element on a GUI. However, rather than using the editor to create the default handler for each button, I named the buttons in a specific way so I could derive some unique information about it and use a single event handler.

 

So if it helps, I have a blog about it at

Remember to take the principle of it and see if it applies