Versioning Issues With Optional Arguments

One nice new feature introduced in C# 4 is support for named and optional arguments . While these two features are often discussed together, they really are orthogonal concepts. Let's look at a quick example of these two concepts at work. Suppose we have a class with one method having the following signature. // v1 public static void Redirect( string url, string protocol = "http" ); This hypothetical library contains a single method that takes in two parameters, a required string url and an optional string protocol . The following shows the six possible ways this method can be called. HttpHelpers.Redirect( "http://haacked.com/" ); HttpHelpers.Redirect(url: "http://haacked.com/" ); HttpHelpers.Redirect( "http...(read more) ...