James and the Giant foreach

I have an idea for a geek movie parody. It will be called "James and the Giant foreach" (instead of "James and the Giant Peach") and it will be about a developer named James who one day, while working, finds a giant foreach loop. Feeling brave, our hero, James, ventures inside and within the foreach he finds... wait of it... a bunch of bugs!

Back to real life: Joel Holder is asserting the foreach is old school and should be stepped away from where possible. An example:

 
 

var bars = foos.Where(foo => foo.IsOk).Select(foo => new Bar() {FooName = foo.Name, BarInteger = foo.SecondInteger}).ToList();

 
 

The copy above in white may be used to replace the copy below in black if one also uses the System.Linq namespace.

 
 

using System.Collections.Generic;

using Microsoft.VisualStudio.TestTools.UnitTesting;

using MyApp.Helpers;

namespace MyApp.Tests

{

   [TestClass]

   public class Whatever

   {

      [TestMethod]

      public void foreach_versus_select()

      {

         Foo uno = new Foo

         {

            Name = "uno",

            IsOk = true,

            FirstInteger = 88,

            SecondInteger = 213

         };

         Foo dos = new Foo

         {

            Name = "dos",

            IsOk = false,

            FirstInteger = 123,

            SecondInteger = 87

         };

         Foo tres = new Foo

         {

            Name = "tres",

            IsOk = true,

            FirstInteger = 37,

            SecondInteger = 56

         };

         Foo cuatro = new Foo

         {

            Name = "cuatro",

            IsOk = true,

            FirstInteger = 253,

            SecondInteger = 568

         };

         

         List<Foo> foos = new List<Foo> { uno, dos, tres, cuatro };

         List<Bar> bars = new List<Bar>();

         

         foreach (Foo foo in foos)

         {

            if (foo.IsOk)

            {

               bars.Add(new Bar

               {

                  FooName = foo.Name,

                  BarInteger = foo.SecondInteger

               });

            }

         }

         

         Assert.AreEqual(bars.Count, 3);

         Assert.AreEqual(bars[1].FooName, "tres");

         Assert.AreEqual(bars[2].BarInteger, 568);

      }

   }

}