Home > DeveloperSection > Forums > How useful is C#'s ?? operator?
Ankita Pandey
Ankita Pandey

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Posted on    January-29-2014 11:37 PM

 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?


Pravesh Singh

Total Post:411

Points:2881
Posted on    January-29-2014 11:39 PM

Post is removed by the User.

Pravesh Singh

Total Post:411

Points:2881
Posted on    January-29-2014 11:54 PM

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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