Re: Yet Another Container: DynamicArray

From: Glen Fernandes (glen.fernandes_at_[hidden])
Date: 2020-01-29 05:32:44

On Wed, Jan 29, 2020 at 12:27 AM Gavin Lambert via Boost
<boost_at_[hidden]> wrote:

> https://www.boost.org/doc/libs/1_72_0/libs/smart_ptr/doc/html/smart_ptr.html#allocate_unique
>
> claims that it returns a std::unique_ptr<T[], D>.

Correct.

A std::unique_ptr<T[], D> stores a D::pointer.

In our case, D is alloc_deleter<T[], A> and its   ::pointer is an
alloc_ptr<T[], Allocator>.

This alloc_ptr<T[], Allocator>  stores an A::pointer and a size_t.

> This seems incompatible with what you're saying above.

It isn't.

 > (There is also no mention of ptr() or size() there.)

It specifies that the ::pointer is an 'unspecified' pointer-like type.
I forgot to document that on this unspecified pointer type one can use
.ptr() to get the Allocator::pointer and .size() to get the size.

Glen