Re: [boost] Yet Another Container: DynamicArray

On Tue, Jan 28, 2020 at 10:51 PM Gavin Lambert via Boost wrote:

On 25/01/2020 01:21, Glen Fernandes wrote:

...

Heap storage, fixed size at runtime: allocate_unique(alloc, size, ...)

Gives users everything they need for buffers. (They don't need a Container that is copyable).

Not quite. These keep the storage pointer and the storage size separately,

Yes quite. i.e. What you believe is not true boost::allocate_unique. i.e. For auto p = boost::allocate_unique(a, n); assert(p.get().size() == n); This is because the unique_ptr stores a pointer adaptor around the Allocator::pointer which also stores the size. So the pointer and size are stored together in the unique_ptr result. To get the plain Allocator::pointer out of it you can use p.get().ptr() Or, for example, p.release().ptr() for someone who wants to manage it themselves. Glen