Null-condition and null-coalescing operator *vs.* plain boolean notation

Question

Example 1:

var ca = p.GetCustomAttribute();
return ca?.Point.IsEqual(cp) ?? false;

Example 2:

var ca          


        

Answer 1

To answer you question (null != ca) is equal to ca? as ?(this gives more readability and shorter version) it operator just check the value is null or not , Not sure but compiler underthe hood doing same thing , you can check using reflector.

Just to not both will give you same result and performs also be same , it just compiler of C# which under the hood replace ? with null check.