Possible pitfalls of using this (extension method based) shorthand

Question

C#6 Update

In C#6 ?. is now a language feature:

// C#1-5
propertyValue1 = myObject != null ? myObject.StringProperty : null; 

// C#         


        

Answer 1

While extension methods generally cause misunderstandings when called from null instances, I think the intent is pretty straightforward in this case.

string x = null;
int len = x.IfNotNull(y => y.Length, 0);

I would want to be sure this static method works on Value Types that can be null, such as int?

Edit: compiler says that neither of these are valid:

    public void Test()
    {
        int? x = null;
        int a = x.IfNotNull(z => z.Value + 1, 3);
        int b = x.IfNotNull(z => z.Value + 1);
    }

Other than that, go for it.