HOW USEFUL IS C#'S ?? OPERATOR?

Ankita Pandey

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Points:1285
Posted by  Ankita Pandey
C# 
C#
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I have been intrigued by the ?? operator, but have still been unable to use it. I usually think about it when I am doing something like:

var x = (someObject as someType).someMember;

If someObject is valid and someMember is null, I could do

var x = (someObject as someType).someMember ?? defaultValue;

but almost invariably I get into problems when someObject is null, and ?? doesn't help me make this any cleaner than doing the null check myself.

What uses have you guys found for ?? in practical situations?
  1. Pravesh Singh

    Post:412

    Points:2888
    Re: How useful is C#'s ?? operator?

    Post is removed by the User.

  1. Pravesh Singh

    Post:412

    Points:2888
    Re: How useful is C#'s ?? operator?

    Hi Ankita,


    I usually use it for strings or nullable types.

    string s = someString ?? "Default message";

    is easier than

       string s;

       if(someString == null)

         s = "Default Message";        

       else

         s = someString;

    or

      string s = someString != null ? someString : "Default Message";

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