Re: [boost] Yet Another Container: DynamicArray

I wrote:

On Wed, Jan 29, 2020 at 12:27 AM Gavin Lambert via Boost wrote:

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https://www.boost.org/doc/libs/1_72_0/libs/smart_ptr/doc/html/smart_ptr.html...

claims that it returns a std::unique_ptr.

Correct.

A std::unique_ptr stores a D::pointer.

In our case, D is alloc_deleter and its ::pointer is an alloc_ptr.

This alloc_ptr stores an A::pointer and a size_t.

...

This seems incompatible with what you're saying above.

It isn't.

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(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.

Basically, a unique_ptr result from an allocate_unique(a, n) _has_ to store the n somewhere in the unique_ptr because it needs to know how many objects to destroy and what size storage to deallocate. I also provide access for you to get that n. (I just forgot to put it in the documentation). Glen