I love the null-coalescing operator because it makes it easy to assign a default value for nullable types.
int y = x ?? -1;
That's great, except if I need to do something simple with
x . For instance, if I want to check
Session , then I usually end up having to write something more verbose.
I wish I could do this:
string y = Session["key"].ToString() ?? "none";
But you can't because the
.ToString() gets called before the null check so it fails if
Session["key"] is null. I end up doing this:
string y = Session["key"] == null ? "none" : Session["key"].ToString();
It works and is better, in my opinion, than the three-line alternative:
string y = "none";
if (Session["key"] != null)
y = Session["key"].ToString();
Even though that works I am still curious if there is a better way. It seems no matter what I always have to reference
Session["key"] twice; once for the check, and again for the assignment. Any ideas?