Question

when using objects I sometimes test for their existence
e.g

if(object)
 object->Use();

could i just use

(object && object->Use());

and what differences are there, if any?

Answer 1

They’re the same assuming object->Use() returns something that’s valid in a boolean context; if it returns void the compiler will complain that a void return isn’t being ignored like it should be, and other return types that don’t fit will give you something like no match for 'operator&&'