Topic: Pointer to member extensions
Author: sachs@fnal.gov ("David Sachs")
Date: Fri, 29 Nov 2002 19:45:42 +0000 (UTC) Raw View
I would like to see in a future version of C++ extensions to the usage of
pointer to member items to make them more usable.
// The following example shows pm usages not in current standard
class inner
{
public:
int i1, i2;
};
class outer
{
inner in;
int ia[10];
};
int main()
{
...
int outer::* pm1 = &outer::ia[1]; // Element of array
int outer::* pm2 = &outer::in.i1; // Member of member
...
pm1++; // pointer to member arithmetic (within
array)
...
}
--
The Klingons' favorite food was named by the first Earthling to see it.
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Author: kon@iki.fi (Kalle Olavi Niemitalo)
Date: Sun, 1 Dec 2002 22:08:21 +0000 (UTC) Raw View
sachs@fnal.gov ("David Sachs") writes:
> int outer::* pm2 = &outer::in.i1; // Member of member
Perhaps you would like pointer-to-member composition, too:
inner outer::* pm3 = &outer::in;
int inner::* pm4 = &inner::i1;
int outer::* pm5 = &pm3->in;
int outer::* pm6 = &(pm3->*pm4);
int outer::* pm7 = &(outer::in.*pm4);
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