Alexander Nasonov wrote:
Alexander Nasonov wrote:
David Abrahams wrote:
John Torjo <john.lists@torjo.com> writes:
You can also use the rtl (Ranges Template Library): (note: I'll rename the library, wince there's another one with the same name ;))
for( crange<container> r(cont); r; ++r) *r += 2;
p.s. no macros involved in the above statement ;) Best, John
That said, you do have have to name the container type. At the same time, you don't have to name the element type ;-)
You could get rid of the container type if you recall any_pointer idea. But this monster is too slow to be an iterator :)
Another idea. The any_pointer could be made lightweighted. ScopedGuard trick can help, on one hand, to hide ugly container type behind typedef'd reference, and, on another hand, to let the compiler remember the "origin". I suspect the compiler have to be very very clever.
// aka ScopedGuard; library code typedef crange_base const& crange_base_ref;
// user code for(crange_base_ref r = make_crange(cont); r; ++r) *r += 2;
you'd need a very smart compiler indeed ;) One that would twist the rules a bit, since the above is not legal C++. Best, John