C#/EnumerableJoin.cs

   1 using System.Collections.Generic;
   2 using System.Text;
   3
   4 namespace IEnumerableExtras
   5 {
   6     /// <summary>
   7     /// Provide <see cref="IEnumerable{T}"/> with Join extension method.
   8     /// </summary>
   9     public static class EnumerableJoin
  10     {
  11         /// <summary>
  12         /// Join all members of this <see cref="IEnumerable{T}"/> to a single string using <paramref name="glue"/>
  13         /// as a separator.
  14         /// </summary>
  15         /// <typeparam name="T"></typeparam>
  16         /// <param name="enumerable"></param>
  17         /// <param name="glue"></param>
  18         /// <returns></returns>
  19         public static string Join<T>(this IEnumerable<T> enumerable, string glue)
  20         {
  21             return enumerable.Reduce( new StringBuilder(), ( sb, item ) => sb.Length == 0 ? sb.Append( item ) : sb.Append( glue ).Append( item ) ).ToString();
  22         }
  23     }
  24 }