More from this authorGoing Round and Round
The Coding CraftsmanDid you think iteration was simple? Well, there’s more than one way to do it. For this example, let’s imagine we have a class called Provider. Let’s imagine it has a Get function which either returns the next item or returns null when there are none left. How would you empty this provider and add all its objects to a list or concatenate them in a string? We saw some code which looked like this // append to StringBuilder StringBuilder builder = new StringBuilder(); while (true) { string next = provider.Get(); // get next if (next == null) { break; } builder.Append(next); // append } The old while-true solution. It just looks wrong. In the code we saw, there was a little more to the “GetNext” and the “Append” lines, so it looked worse. Surely there are other ways of doing it? Well, let’s have a look at some. Firstly we need a testable provider: /// <summary> /// A simple provider that will return C, B, A and then nulls /// </summar
