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The storage pointer remembers the value of <<ref_is_deallocate_trivial>>
The storage pointer remembers the value of <<存储指针会记录 &lt;<ref_is_deallocate_trivial>&gt; 的值，</ref_is_deallocate_trivial>>
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ownership of the memory resource; the lifetime of the resource is extended until all copies of the storage pointer are destroyed.
ownership of the memory resource; the lifetime of the resource is extended until all copies of the storage pointer are destroyed.对内存资源的共享所有权；该资源的生命周期将延长，直至所有该存储指针的副本均被销毁。
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A storage pointer obtained from <<ref_make_shared_resource>> acquires shared
A storage pointer obtained from <<通过 &lt;<ref_make_shared_resource>&gt; 获取的存储指针会获得</ref_make_shared_resource>> acquires shared
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{ref_polymorphic_allocator} do not acquire ownership; the caller is responsible for ensuring that the lifetime of the resource extends until it is no longer referenced.
从 {ref_polymorphic_allocator} do not acquire ownership; the caller is responsible for ensuring that the lifetime of the resource extends until it is no longer referenced.构造的存储指针，不获取所有权；调用方负责确保资源的生命周期持续到不再被引用为止。
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Storage pointers constructed from a {ref_memory_resource} or
Storage pointers constructed from a从 {ref_memory_resource} or构造的存储指针，或
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<<default_memory_resource,default resource>>, an implementation-defined instance which always uses the equivalent of global operator new and delete.
<&lt;<default_memory_resource,default resource>>, an implementation-defined instance which always uses the equivalent of global operator new and delete.="">&gt;（默认资源），这是一个由实现定义的实例，始终使用等效于全局 operator new 和 operator delete 的方式。</default_memory_resource,default>
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Default-constructed storage pointers reference the
Default-constructed storage pointers reference the默认构造的存储指针引用
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type-erased {ref_memory_resource}.
type-erased类型擦除后的 {ref_memory_resource}.。
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A storage pointer always points to a valid,
A storage pointer always points to a valid,存储指针始终指向一个有效的、
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= `storage_ptr` Variable-length containers in this library all use dynamically allocated memory to store their contents. Callers can gain control over the strategy used for allocation by specifying a <<ref_storage_ptr>> in select constructors and function parameter lists. A <<ref_storage_ptr>> has these properties:
= `storage_ptr` Variable-length containers in this library all use dynamically allocated memory to store their contents. Callers can gain control over the strategy used for allocation by specifying a <<ref_storage_ptr>> in select constructors and function parameter lists. A <<ref_storage_ptr>> has these properties:本库中的可变长度容器均使用动态分配的内存来存储其内容。调用方可通过在特定构造函数和函数参数列表中指定 &lt;<ref_storage_ptr>&gt; ，以控制所使用的内存分配策略。&lt;<ref_storage_ptr>&gt; 具有以下特性：</ref_storage_ptr></ref_storage_ptr>
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:leveloffset: -1
:leveloffset: -1
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include::background.adoc[] include::storage_ptr.adoc[] include::uses_allocator.adoc[]
include::background.adoc[] include::storage_ptr.adoc[] include::uses_allocator.adoc[]
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:leveloffset: +1
:leveloffset: +1
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Here we discuss the various allocator models used in the C++ standard, followed by an explanation of the model used in this library and its benefits. Finally we discuss how the library interoperates with existing code that uses polymorphic allocators.
Here we discuss the various allocator models used in the C++ standard, followed by an explanation of the model used in this library and its benefits. Finally we discuss how the library interoperates with existing code that uses polymorphic allocators.本文将首先讨论C++标准中使用的各种分配器模型，随后介绍本库所采用的模型及其优势，最后说明该库如何与使用多态分配器的现有代码进行互操作。
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= Allocators
= Allocators分配器
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Boost.JSON solves this problem by introducing a new smart pointer called <<ref_storage_ptr>> which builds upon {cpp}17's memory allocation interfaces, accomplishing the goals above. As a result, libraries which use this type compose more easily and enjoy faster compilation, as member functions for containers which use the type can be defined out-of-line.
Boost.JSON solves this problem by introducing a new smart pointer called <<ref_storage_ptr>> which builds upon {cpp}17's memory allocation interfaces, accomplishing the goals above. As a result, libraries which use this type compose more easily and enjoy faster compilation, as member functions for containers which use the type can be defined out-of-line.通过引入一个名为&lt;<ref_storage_ptr>&gt; 的新型智能指针解决此问题，该指针基于{cpp}17的内存分配接口构建，实现了上述目标。因此，使用该类型的库更易于组合，并能获得更快的编译速度，因为使用该类型的容器的成员函数可以定义在类外（out-of-line）。</ref_storage_ptr>
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`T` interoperates with code already using `std::pmr`
`T` interoperates with code already using 能与已使用`std::pmr`的代码互操作
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`T` supports both reference semantics or shared ownership
`T` supports both reference semantics or shared ownership同时支持引用语义和共享所有权
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