Novacoin/IListExtensions.cs

   1 \feffusing System.Collections.Generic;
   2 using System.Diagnostics.Contracts;
   3
   4 namespace Novacoin
   5 {
   6     static class IListExtensions
   7     {
   8         public static void Swap<T>(
   9             this IList<T> list,
  10             int firstIndex,
  11             int secondIndex
  12         )
  13         {
  14             Contract.Requires(list != null);
  15             Contract.Requires(firstIndex >= 0 && firstIndex < list.Count);
  16             Contract.Requires(secondIndex >= 0 && secondIndex < list.Count);
  17             if (firstIndex == secondIndex)
  18             {
  19                 return;
  20             }
  21             T temp = list[firstIndex];
  22             list[firstIndex] = list[secondIndex];
  23             list[secondIndex] = temp;
  24         }
  25     }
  26 }