C# if-null-then-null expression

Question

Just for curiosity/convenience: C# provides two cool conditional expression features I know of:

string trimmed = (input == null) ? null : input.Trim();
         


        

Answer 1

Currently we can only write an extension method if you don't want to repeat yourself, I'm afraid.

public static string NullableTrim(this string s)
{
   return s == null ? null : s.Trim();
}