This struct is a wrapper around the allocator and size data members of a list. It takes advantage of the empty‐base optimization (EBO) so that if the allocator is stateless, it takes up no space.

Synopsis

Declared in <bslstl_list.h>

template<
    class VALUE,
    class ALLOCATOR>
class List_AllocAndSizeWrapper
    : public allocator_traits<ALLOCATOR>::rebind_traits<List_Node<VALUE>>::allocator_type

Description

TBD: This struct should eventually be replaced by the use of a general EBO‐enabled component that provides a pair‐like interface. (A properly‐optimized tuple would do the job.)

Base Classes

Name

Description

allocator_traits<ALLOCATOR>::rebind_traits<List_Node<VALUE>>::allocator_type

Member Functions

Name

Description

List_AllocAndSizeWrapper [constructor]

Create an allocator and size wrapper having the specified basicAllocator and (initial) size.

size

Return a reference providing modifiable access to the size field of this object.

size

Return a reference providing non‐modifiable access to the size field of this object.

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