Hello Root users,
I'd like to comment about constness from cint's concern. This message
does not answer the original question directly, but has some relationship.
By default, cint does not distinguish const and non-const member function.
If you have both const and non-const version, you have to mask const
version for makecint.
class A {
public:
A& f();
#if (!defined(__MAKECINT__) || defined(G__CONSTNESSFLAG))
const A& f() const;
#endif
};
In cint5.14.28 which will be exposed shortly, if you compile cint
with G__CONSTNESSFLAG macro in G__ci.h or platform dependency file,
const and non-const member function will be distinguished.
However, it is not recommended to activate this feature at this moment
because of following problems.
- shared library binary compatibility will be lost
- problems in using/compiling STL container classes
For the time being, please have different function name for const and
non-const version.
Thank you
Masaharu Goto
>
>Hi,
>
>This reminds me of a long standing isue on const declarations of as well
>member functions as their arguments. As known and ppl reported before
>(see e.g. roottalk98/1491.html) a lot of classes miss const-declararions
>at several places where they should/could be placed. The reason for this
>is (probably) mainly historical. Begin last year (1999), or was it even
>1998 Rene and Fons did already some cleanup on this, however still a lot
>remains. Is there any plan to do a major cleanup on this?
>
>This has of course effect on existing (user) code, which might be broken.
>However if it is not corrected it also results in more 'incorrect' code
>being written (I e.g. quite often have to force a const_cast to be able to
>call a incorrectly non const member of a root class.) Therefore it is
>probably something which should happen in a major new release (V3.?).
>
>This whole thing is ofcourse not essential. So maybe I'm the only one
>bothered by this. If not, I would like to (re)start a discussion on how
>and when to improve the root classes on const-declarations.
>
>Cheers, Rutger
>
>
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