Question

If I have fnc:

class AClass
{
    void fnc() const;
};

Am I supposed to provide const modifier in UML class diagram while listing this fnc or not?

Answer 1

You are the only person who will identify your UML Diagrams details. So UML does not dictate(if it dictate who cares:-)) you anything… You can show it or not .

The real question is:

Why you draw that diagram? Who is your audience? [ Who will read diagrams]

and

For yourself or for your audience, is it necessary show that detail? What kind of benefit you gain?

Just technical info

In c++

Declaring a member function with the const keyword specifies that the function is a “read-only” function that does not modify the object for which it is called.

So …

If fnc does not change anything on it ( it can change on Logger) It can be “labeled” as “query”.