Create duplicate items in a list

Question

I have the following code to duplicate the members of a list X times.

Although it works it doesn\'t feel particularly clean.

Live code example:

Answer 1

Splitting the two components...

var parts = source.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries);

var serviceEndPoints = (from i in Enumerable.Range(0, instances * parts.Length)
                        let j = i / instances
                        let part = parts[j]
                        select new ServiceEndPoint { Index = j, Uri = part }).ToList();

or...

var parts = source.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries);

var serviceEndPoints2 = (from i in Enumerable.Range(0, parts.Length)
                        let part = parts[i]
                        from j in Enumerable.Range(0, instances)                            
                        select new ServiceEndPoint { Index = i, Uri = part }).ToList();

It's very similar to two for one inside the other :-)