dev-cpp-users

[Ioannis V. <no...@ho...>]

Let's clear this one for all. What the standard says:=0D
=0D
"A pointer to member shall not point to a static member of a class (9.4),=
 a
member with reference type, or =93cv void.=94 [Note: see also 5.3 and 5.5=
=2E The
type =93pointer to member=94 is distinct from the type =93pointer=94, tha=
t is, a
pointer to member is declared only by the pointer to member declarator
syntax, and never by the pointer declarator syntax. There is no =93refere=
nce
to member=94 type in C++. ]"=0D
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"A pointer to member is only formed when an explicit & is used and its
operand is a qualified id not enclosed in parentheses. [Note: that is, th=
e
expression &(qualifiedid),=0D
where the qualified id is enclosed in parentheses, does not form an
expression of type =93pointer to member.=94 Neither does qualified id, be=
cause
there is no implicit conversion from a qualified id for a nonstatic membe=
r
function to the type =93pointer to member function=94 as there is from an=
 lvalue
of function type to the type =93pointer to function=94 (4.3). Nor is &
unqualified id a pointer to member, even within the scope of the unqualif=
ied
id=92s class. ]"=0D
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In summary pointers to member functions are not equivalent to pointers to
regular functions. They can be (and usually are) implemented differently.=
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Ioannis Vranos=0D
 =0D
* Programming pages: http://www.noicys.freeurl.com=0D
* Alternative URL: http://run.to/noicys=20