Home › Programming Puzzle: What is the best way to format a comma delimited list?

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Mon, 2009-03-09 00:48 — MonkeeSage (not verified)

Better C# version

Rather than using an extra string object and the Substring method, this is better (also uses the fact that StringBuilder methods are composable):

	public static string Intersperse<T> (IEnumerable<T> enumerable, string delimiter)
	{
		StringBuilder sb = new StringBuilder ();
		foreach (T item in enumerable)
		{
			if (item == null) continue;
			sb.Append (item).Append (delimiter);
		}
		sb.Length = sb.Length - delimiter.Length;
		return sb.ToString();
	}

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