associated_allocator

Traits type used to obtain the allocator associated with an object.

template<
    typename T,
    typename Allocator = std::allocator<void>>
struct associated_allocator

Types

Name	Description
type	If T has a nested type allocator_type, T::allocator_type. Otherwise Allocator.

Member Functions

Name	Description
get [static]	If T has a nested type allocator_type, returns t.get_allocator(). Otherwise returns type(). — If T has a nested type allocator_type, returns t.get_allocator(). Otherwise returns a.

A program may specialise this traits type if the T template parameter in the specialisation is a user-defined type. The template parameter Allocator shall be a type meeting the Allocator requirements.

Specialisations shall meet the following requirements, where t is a const reference to an object of type T, and a is an object of type Allocator.

Provide a nested typedef type that identifies a type meeting the Allocator requirements.
Provide a noexcept static member function named get, callable as get(t) and with return type type or a (possibly const) reference to type.
Provide a noexcept static member function named get, callable as get(t,a) and with return type type or a (possibly const) reference to type.

Requirements

Header: boost/asio/associated_allocator.hpp

Convenience header: boost/asio.hpp

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