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[std-proposals] Pointer to member suggestions

From: sasho648 <sasho648_at_[hidden]>
Date: Fri, 18 Mar 2022 14:00:52 +0200

I'm writing in regards the current situation with pointer to members.

First issue and most confusing perhaps is the fact that dereferencing such
pointers takes a primary expression (instead of unary). This reduces
usability significantly. When you say:


I strongly suspect that you don't intend to dereference the result of a
function call and even if that's the case (which will be a very obscure
case) I suspect changing current behavior will still issue diagnostics if
the code was valid before.

I guess you are getting where I'm going to with this one - I suggest
changing the syntax for pointer to member indirection operator to take a
unary instead of primary expression with minimal breaking old code impact
(I can only come to this conclusion given above thoughts).

Another suggestion, kinda on the topic, would be:

1. Adding a way to symbolize (mangle) given symbol (for easier linker

2. Most significantly allowing pointer to constructor with syntax like:

auto *ptrtocnstr = &Class::Class;

auto *classinstance = new ptrtocnstr(cnstrarg0, cnstrarg1);

auto *classplacement = new (classinstance) ptrtocnstr(cnstrarg0, cnstrarg1);

The above changes would allow dynamically linking in system specific ways.


For multiple constructors - the same way overloaded functions are
determined, based on a cast.


Alexander Nikolov

Received on 2022-03-18 12:01:05