Can I 'invert' a bool?

Question

I have some checks to see if a screen is active. The code looks like this:

if (GUI.Button(new Rect(Screen.width / 2 - 10, 50, 50, 30), "Rules")) //Creates a button     {         if (ruleScreenActive == true) //check if the screen is already active             ruleScreenActive = false; //handle according to that         else              ruleScreenActive = true;     } 

Is there any way to - whenever I click the button - invert the value of ruleScreenActive?

(This is C# in Unity3D)

Answer 1

You can get rid of your if/else statements by negating the bool's value:

ruleScreenActive = !ruleScreenActive; 

Answer 2

I think it is better to write:

ruleScreenActive ^= true; 

that way you avoid writing the variable name twice ... which can lead to errors