Verbs - Buried abstraction in OO World

Program.cs

class Program
{
  static void Main(string[] args)
  {
    List<Student> students = new List<Student>();

    // Populate Students List here	

    Student[] studentsSortedByName = students.ToArray();       

    Array.Sort(studentsSortedByName, new StudentNameComparer());
  }
}

Program1.cs

class Program1
{
  static void Main(string[] args)
  {
    List<Student> students = new List<Student>();
	
    // Populate Students List here	

    Student[] studentsSortedByAge = students.ToArray();       

    Array.Sort(studentsSortedByAge, new StudentAgeComparer());
  }
}

Program2.cs

class Program2
{
  static void Main(string[] args)
  {
    List<Student> students = new List<Student>();

    // Populate Students List here	

    var studentsSortedByName = Enumerable.OrderBy(students, s => s.Name);
    var studentsSortedByAge = Enumerable.OrderBy(students, s => s.Age);
  }
}

Student.cs

public class Student
{
  public int Age { get; set; }
  public string Name { get; set; }
}

StudentAgeComparer.cs

public class StudentAgeComparer : IComparer<Student>
{
  public int Compare(Student x, Student y)
  {
    if (x.Age == y.Age)
    {
      return 0;
    }
    if (x.Age < y.Age)
    {
      return -1;
    }
      return 1;
  }
}

StudentNameComparer.cs

public class StudentNameComparer : IComparer<Student>
{
  public int Compare(Student x, Student y)
  {
    return string.Compare(x.Name, y.Name, StringComparison.CurrentCulture);
  }
}