Var assigned; Value not used

Unity Engine
1

I’m trying to write a C# script and I keep getting an annoying warning that I assigned a var but never use it, but I do use it. Still the error persists.

        //In update  
        int testVar = 0;
        testVar = 0; //Stupid error that it is never used

*EDIT: Meanwhile this clears the error, is this how you script in C#? Is this normal?

       int testVar = 0;
        int howAboutThis = 0;
        testVar = 1; //Stupid error that it is never used
        howAboutThis = testVar; //Oh come on....
2

It’s a warning, not an error.

3

It isn’t used. What are you using it for? You assign a value to it, that’s it. That’s not being used. It’s telling you exactly that. It’s assigned but not used.

And as @FMark92 posted before I could finish, it’s just a notice that you are creating a variable, assigning a value to it, but then not doing anything with it. It has no effect on your game.

1 Like
4

You also don’t need this:

testVar = 0;

or this:

else { testVar = 0; }

And you only need 2 different values on single variable, you should probably use a bool.

5

Yes I see, unity script would never harass me about this, but I guess now that I’m using the big boy language, I have to start coding inside the lines.

When I added “Debug.Log(testVar);” The error… I mean, the ‘warning’ went away because I gave the var purpose. I guess C# doesn’t trust coders to remember their dead end vars. My work method has always been to set up the framework for what I need and then tie things together afterwards. I would leave a lot of unused vars sitting until I get around to tying them into something.

I suppose however, this is a better practice and helps keep cleaner code.

As for the else{testVar = 0;} etc, that was just troubleshooting for the warning I was getting as at the time I didn’t understand why it saying it wasn’t used.