1 Comment

• 

  Steve Cooper

  Hi. Thanks for the mention! I’ve found that Join is so useful on IEnumerable, I’ve written an extension function which has this signature;

  string Join(this IEnumerable sequence, string seperator);

  which means you can write;

  string delimitedids = ids.Select(x => x.ToString()).Join(“, “);

  Here’s the implementation using a stringbuilder;

  public static string Join(this IEnumerable strings, string seperator)
  {
  IEnumerator en = strings.GetEnumerator();
  StringBuilder sb = new StringBuilder();
  if (en.MoveNext())
  {
  // we have at least one item.
  sb.Append(en.Current);
  }
  while (en.MoveNext())
  {
  // second and subsequent get delimiter
  sb.Append(seperator).Append(en.Current);
  }
  return sb.ToString();
  }

  I tend to use this all the time when putting together code that generates descriptions; debug messages, ToStrings, that kind of thing.

  02 Sep 2008 09:09 pm

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