Novacoin/IListExtensions.cs

   1 \feffusing System;
   2 using System.Collections.Generic;
   3 using System.Linq;
   4 using System.Text;
   5 using System.Threading.Tasks;
   6
   7 using System.Diagnostics.Contracts;
   8
   9 namespace Novacoin
  10 {
  11     static class IListExtensions
  12     {
  13         public static void Swap<T>(
  14             this IList<T> list,
  15             int firstIndex,
  16             int secondIndex
  17         )
  18         {
  19             Contract.Requires(list != null);
  20             Contract.Requires(firstIndex >= 0 && firstIndex < list.Count);
  21             Contract.Requires(secondIndex >= 0 && secondIndex < list.Count);
  22             if (firstIndex == secondIndex)
  23             {
  24                 return;
  25             }
  26             T temp = list[firstIndex];
  27             list[firstIndex] = list[secondIndex];
  28             list[secondIndex] = temp;
  29         }
  30     }
  31 }