variant, C# - rextester

Language: Layout:

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var list = new List<object>{1, 2.3, "bassam"};
            foreach (var o in list)
            {
                if (o is int)
                {
                    Console.WriteLine("{0} is int", o.ToString());
                }
                else if (o is double)
                {
                    Console.WriteLine("{0} is double", o.ToString());
                }
                else if (o is string)
                {
                    // string s = o as string; // кастуем от object к настоящему типу и работаем со всеми методами класса, если нужно...
                    Console.WriteLine("{0} is string", o.ToString());
                }
            }
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,44 sec, absolute running time: 0,3 sec, cpu time: 0,23 sec, average memory usage: 14 Mb, average nr of threads: 3, absolute service time: 0,88 sec