> There are some problems with type qualifiers and reference / non-
> reference types in <function> (Dec 96 DWP).
>
> Kevin S. Van Horn proposed his <xfunctional.h> to fix this problems.
> http://www.xmission.com/~ksvhsoft/code/fct_objs.html

Perhaps these problems are not as known as I thought.

Example:
bool f(const A& a, const A& b)
{return true;}

bool b = bind2nd(ptr_fun(f), a2)) (a1);

According to the Dec 96 DWP this is illegal, because

ptr_fun returns a pointer_to_binary_function<const A&, const A&, bool>  // ok

bind2nd returns a
binder2nd<pointer_to_binary_function<const A&, const A&, bool> >
with the ctor:
binder2nd (const pointer_to_binary_function<const A&, const A&, bool>& x,
           const const A&&);    //  :-(
and the
bool operator () (const const A &&) const;  //  :-(


This is not a simple bug in the DWP, it requires a redesign like the
<xfunctional.h> of Kevin S. Van Horn. In many templates you need to know
the plain type of the template arguments (without any qualifiers and &'s).

> Are there any improvements for this in the Oct 97 DWP ?


Ralf
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There are some problems with type qualifiers and reference / non-
reference types in <function> (Dec 96 DWP).

Kevin S. Van Horn proposed his <xfunctional.h> to fix this problems.
http://www.xmission.com/~ksvhsoft/code/fct_objs.html

Are there any improvements for this in the Oct 97 DWP ?


BTW, what are the major changes in the Oct 97 DWP ?


Ralf
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