In C#, you can do the following:

List registers = new List { 1, 2, 3, 4 };

This will produce a list with 1, 2, 3, and 4 in the list. Suppose that I am given a list from some function and I want to insert a bunch of numbers like the following:

List register = somewhere(); register.Add(1); register.Add(2); register.Add(3); register.Add(4);

Is there a cleaner way of doing this like the snippet above?