El 20/01/2012 10:15, Jonathan M Davis escribió:
On Friday, January 20, 2012 09:58:42 Marco Leise wrote:
Ah, I meant to say that getters should not modify their object. When I see
"a = abc.x[i]" I would be a little surprised to find that it changes the
observable state of abc. The same goes for "a = b.length()". Now it is
clearer, isn't is? :p
The one major place where you essentially have a getter being able to modifer
the original through its return value in C++ that I'm aware of is the
subscript operator, and it has to in order to function like the built-in
substript operator, so that's a special case.
- Jonathan M Davis
Well, there is the case of std::map and its [] operator which adds an
element if it does not exist. Even if in the right hand side:
a = map[x]; // modifies map if x was not found in it
Maybe Marco is talking about something like that.
