Use of Boolean? in if expression

Question

If I have a nullable Boolean b, I can do the following comparison in Java:

Boolean b = ...;
if (b != null && b) {
   /* Do something */
         


        

Answer 1

For Kotlin what i normally use is

if (object?.booleanProperty ==true)
   { 
     //do stuff 
   }

this would only work when the property is true and the object is not null. For the reverse:

if (!object?booleanProperty !=true)
   { 
     //do Stuff
   }