:: KBs ::

Optimize Assignments
Created Date: 4/23/2008
Last Modified Date: 4/23/2008
Believe it or not, just optimizing the assignments can lead to a much faster performance. Whenever use the increment function (C# only) otherwise the += sign is better than a = a + 1. This is true because the code does not have to fetch twice the same memory block (once for loading the value and the second one to save).

public void OptimizeAssignmentTest1()
{
   int Loops = 100000000;
   int ReturnValue = 0;

   DateTime StartTime = DateTime.Now;
   for (int i = 0; i < Loops; i++)
   {
      ReturnValue = ReturnValue + 1;
   }
   DateTime Endtime = DateTime.Now;

   System.Console.WriteLine("ReturnValue = ReturnValue + 1 - \t" + Endtime.Subtract(StartTime).TotalSeconds.ToString());
}

public void OptimizeAssignmentTest2()
{
   int Loops = 100000000;
   int ReturnValue = 0;

   DateTime StartTime = DateTime.Now;
   for (int i = 0; i < Loops; i++)
   {
      ReturnValue += 1;
   }
   DateTime Endtime = DateTime.Now;

   System.Console.WriteLine("ReturnValue += 1 - \t" + Endtime.Subtract(StartTime).TotalSeconds.ToString());
}

public void OptimizeAssignmentTest3()
{
   int Loops = 100000000;
   int ReturnValue = 0;

   DateTime StartTime = DateTime.Now;
   for (int i = 0; i < Loops; i++)
   {
      ReturnValue++;
   }
   DateTime Endtime = DateTime.Now;

   System.Console.WriteLine("ReturnValue++ - \t" + Endtime.Subtract(StartTime).TotalSeconds.ToString());
}


















100,000,000 Loops (in Sec)
ReturnValue = ReturnValue + 1 1.09375
ReturnValue += 1 1.0625
ReturnValue++ 0.890625

:: Better Coding Practices ::