Imports System Imports uCalcSoftware Public Module Program Public Sub Main() Dim uc As New uCalc() '// Define a variable 'x' that will be updated in the loop. Dim variableX = uc.DefineVariable("x") '// Parse the expression just once before the loop begins. Dim parsedExpr = uc.Parse("x^2 * 10") Console.WriteLine("Evaluating 'x^2 * 10' for x = 1 to 5:") For x As Double = 1 To 5 variableX.Value(x) '// Evaluate is very fast as the parsing work is already done. Console.WriteLine($"x = {x}, Result = {parsedExpr.Evaluate()}") Next End Sub End Module