C# Dispatch table based on "Generic Dictionary", "Collection Initializer" and "Lambda Expressions"

tryjsil.cs

using System;
using System.Linq;
using System.Collections.Generic;

public class Program
{
    static void Main()
    {
        Func<int, bool> Default = (x => true);
        
        var myNum = 29;
		// A dispatch table is a data structure that associates an index (or key) value to an action.
		// It's a rather elegant replacement for a switch-case statement .
        var cases = new Dictionary<Func<int, bool>, Action>
        {
            { x => x < 3,   () => Console.WriteLine(String.Format("{0} is smaller than or equal to 3", myNum))     },
            { x => x < 30,  () => Console.WriteLine(String.Format("{0} is smaller than or equal to 30", myNum))    },
            { x => x < 300, () => Console.WriteLine(String.Format("{0} is smaller than or equal to 300", myNum))   },
            { Default,      () => Console.WriteLine("Default case")                                                }
        };
        cases.FirstOrDefault(kvp => kvp.Key(myNum)).Value();
    }
}

http://jsil.org/try/#5f9806b93b5294ced34c