// C# Eval Expression

// Doc: https://eval-expression.net/options

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// @nuget: Z.Expressions.Eval

​

/*

## ForceObjectAsDynamic

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The ForceObjectAsDynamic option lets you get or set if the type `object` should for operator `==` (equals) and `!=` (not equals) compare by reference or value. By default, the ForceObjectAsDynamic value is `false` (compared by reference).

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In this example, we will first compare 2 objects with an `int` value by directly using C# statement to show the difference between an equals operator `==` and the `Equals` method. Then we will use our library first directly with the equals operator, then again, but this time, with the `ForceObjectAsDynamic = true` option.

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> NOTE: The option might be eventually renamed to reflect the purpose better. It was initially created to handle more scenarios we now solve by default.

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See more: https://eval-expression.net/options

*/

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using System;

using Z.Expressions;

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public class Program

{

    public static void Main()

    {

        // Global Context: EvalManager.DefaultContext.ForceObjectAsDynamic = true;

        var context = new EvalContext();

        context.UseCache = false;

        object x = 1;

        object y = 1;

        Console.WriteLine("1 - Result: " + (x == y).ToString()); // false

        Console.WriteLine("2 - Result: " + x.Equals(y)); // true

        Console.WriteLine("3 - Result: " + context.Execute("x == y", new { x, y })); // false

        context.ForceObjectAsDynamic = true;

        Console.WriteLine("4 - Result: " + context.Execute("x == y", new { x, y })); // true

    }

}