dolfin team mailing list archive

Thread
Date

const inconsistencies for operator* in inheriting Iterator classes

To: DOLFIN Mailing List <dolfin@xxxxxxxxxxxxxxxxxxx>
From: Andre Massing <massing@xxxxxxxxx>
Date: Fri, 14 Jan 2011 16:47:59 +0100
User-agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; nb-NO; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7

Hi!

Since we talk so much about constantness in another post :),
I am just wondering why the operator* (and related operator)
in Iterator classes sometimes returns a const reference to an entity like
inline const Facet& operator*() { return *operator->(); }
and sometimes not as in
inline Cell& operator*() { return *operator->(); }

Should that not be consistent and even better should not both version beprovided, as in

inline const Facet& operator*() const { return *operator->(); }
and				(^^^ there should be a second const)
inline Facet& operator*() { return *operator->(); }
?

--
Andre

--
André Massing       		email: massing@xxxxxxxxx
Ph.D. student			mobile: +47 469 57 401
Simula Research Laboratory
NO-1367 Fornebu, Norway