How can I return an empty IEnumerable?

Question

Given the following code and the suggestions given in this question, I\'ve decided to modify this original method and ask if there are any values in the IEnumarable return i

Answer 1

That's of course only a matter of personal preference, but I'd write this function using yield return:

public IEnumerable FindFriends()
{
    //Many thanks to Rex-M for his help with this one.
    //http://stackoverflow.com/users/67/rex-m
    if (userExists)
    {
        foreach(var user in doc.Descendants("user"))
        {
            yield return new Friend
                {
                    ID = user.Element("id").Value,
                    Name = user.Element("name").Value,
                    URL = user.Element("url").Value,
                    Photo = user.Element("photo").Value
                }
        }
    }
}