Evil Calculator/CalculatorBody.cs

@@ -200,7 +200,7 @@
             currentOperandTextBox.ForeColor = Color.White;
             CalculatorPanel.Controls.Add(currentOperandTextBox);
 
-            equationManager.AcquireOutputLabels(ref equationTextBox, ref currentOperandTextBox);
+            equationManager.AcquireOutputLabels(equationTextBox, currentOperandTextBox);
 
             CalculatorPanel.Show();
 

Evil Calculator/EquationManager.cs

@@ -145,12 +145,12 @@
             {
                 if (currentOperand != "") equation.Add(new Token(Token.TokenType.Operand, currentOperand));
                 buttonEquals.Text = "#";
-                currentOperand = reverseNotationSolver.Solve(ref equation);
+                currentOperand = reverseNotationSolver.Solve(equation);
                 UpdateLabels();
             }
         }
 
-        public void AcquireOutputLabels(ref Label equationTextBox, ref Label currentOperandTextBox)
+        public void AcquireOutputLabels(Label equationTextBox, Label currentOperandTextBox)
         {
             outerEquationLabel = equationTextBox;
             outerOperandLabel = currentOperandTextBox;

Evil Calculator/ReverseNotattionSolver.cs

@@ -4,7 +4,7 @@
     {
         List<Token> equation = new();
 
-        public string ToReverseNotation(ref List<Token> equation)
+        public string ToReverseNotation(List<Token> equation)
         {
             List<Token> TEMP = new List<Token>();
             Stack<Token> OPERATORS = new Stack<Token>();
@@ -47,9 +47,9 @@
         }
 
         
-        public string Solve(ref List<Token> equation)
+        public string Solve(List<Token> equation)
         {
-            ToReverseNotation(ref equation);
+            ToReverseNotation(equation);
             Stack<Token> stack = new Stack<Token>();
             foreach (Token token in this.equation)
             {