/**********************************************************************************************

* This fiddle is a demo of the library : CodingSeb.ExpressionEvaluator

* See : https://github.com/codingseb/ExpressionEvaluator

* For Others examples : https://dotnetfiddle.net/Packages/41132/CodingSeb_ExpressionEvaluator

**********************************************************************************************/

​

using System;

using System.Collections.Generic;

using CodingSeb.ExpressionEvaluator;

public class Program

{

    public static void Main()

    {

        ExpressionEvaluator evaluator = new ExpressionEvaluator();

        evaluator.Variables = new Dictionary<string, object>()

        {

          { "x", 2.5 },

          { "y", -3.6 },

          { "myVar", "Hello World" },

          { "myArray", new object[] { 3.5, "Test", false } },

          { "Add", new Func<int,int,int>((x, y) => x + y)},

          { "SayHelloTo", new Action<string>(name => Console.WriteLine("Hello " + name + " !!!"))},

        };

        List<string> expressions = new List<string>()

        {

            "x+y",

            "myVar + \" !!!\"",

            "myArray.Length",

            "myArray[0]",

            "myArray[1].Length",

            "myArray[2] || true",

            "Add(5, 9)",

            "SayHelloTo(\"John\")"

        };

        expressions.ForEach(expression => 

        {

            Console.WriteLine(expression);

            Console.WriteLine(evaluator.Evaluate(expression));

            Console.WriteLine(string.Empty);

        });

    }

}