标准库头文件 <scoped_allocator>

 

C++

语言

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库概念

语言支持库

诊断库

工具库

字符串库

容器库

算法库

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输入/输出库

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正则表达式库(C++11)

原子操作库(C++11)

线程支持库(C++11)

文件系统库(C++17)

技术规范

 

标准库头文件

语言支持
<cstddef> <limits> <climits> <version>	<cfloat> <cstdint> <new>	<typeinfo> <exception> <initializer_list>	<csignal> <csetjmp> <cstdarg>
诊断
<stdexcept>	<cassert>	<cerrno>	<system_error>
通用工具
<utility> <memory> <memory_resource> <scoped_allocator>     <compare>	<bitset> <tuple> <optional> <any> <variant>	<type_traits> <ratio> <chrono> <typeindex> <functional>	<ctime> <cstdlib>
字符串
<string> <string_view>	<cctype> <cwctype>	<cwchar> <cuchar>	<cstring> <charconv>
本地化
<locale>	<codecvt>	<clocale>
容器
<span> <array> <vector>	<deque> <forward_list> <list>	<map> <set> <queue>	<unordered_map> <unordered_set> <stack>
迭代器
<iterator>
算法
<algorithm>	<execution>
数值
<complex> <random>	<valarray> <numeric>	<cfenv> <cmath>
输入/输出
<iosfwd> <ios> <iomanip> <streambuf>	<istream> <ostream> <iostream>	<sstream> <fstream> <syncstream>	<cstdio> <cinttypes> <strstream>
正则表达式
<regex>
文件系统
<filesystem>
线程支持
<thread> <atomic>	<mutex> <shared_mutex>	<condition_variable> <future>
C 兼容
<ciso646> <cstdalign>	<cstdbool> <ccomplex>	<ctgmath>

 

此头文件是动态内存管理库的一部分。

类
scoped_allocator_adaptor (C++11)	为多级容器实现的多级分配器 (类模板)
函数
operator== operator!=	比较两个 scoped_allocator_adaptor 实例 (std::scoped_allocator_adaptor 的公开成员函数)

概要

namespace std {   template<class OuterAlloc, class... InnerAlloc>class scoped_allocator_adaptor;   template<class OuterA1, class OuterA2, class... InnerAllocs>bool operator==(const scoped_allocator_adaptor<OuterA1, InnerAllocs...>& a, const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& b)noexcept;template<class OuterA1, class OuterA2, class... InnerAllocs>bool operator!=(const scoped_allocator_adaptor<OuterA1, InnerAllocs...>& a, const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& b)noexcept;}

类模板 std::scoped_allocator_adaptor

namespace std {template<class OuterAlloc, class... InnerAllocs>class scoped_allocator_adaptor :public OuterAlloc {private:using OuterTraits = allocator_traits<OuterAlloc>;// 仅为说明 scoped_allocator_adaptor<InnerAllocs...> inner;// 仅为说明public:using outer_allocator_type = OuterAlloc;using inner_allocator_type =/* see definition */;using value_type =typename OuterTraits::value_type;using size_type =typename OuterTraits::size_type;using difference_type =typename OuterTraits::difference_type;using pointer =typename OuterTraits::pointer;using const_pointer =typename OuterTraits::const_pointer;using void_pointer =typename OuterTraits::void_pointer;using const_void_pointer =typename OuterTraits::const_void_pointer;using propagate_on_container_copy_assignment =/* see definition */;using propagate_on_container_move_assignment =/* see definition */;using propagate_on_container_swap =/* see definition */;using is_always_equal =/* see definition */;template<class Tp>struct rebind {using other = scoped_allocator_adaptor< OuterTraits::template rebind_alloc<Tp>, InnerAllocs...>;}; scoped_allocator_adaptor();template<class OuterA2> scoped_allocator_adaptor(OuterA2&& outerAlloc, const InnerAllocs&... innerAllocs)noexcept; scoped_allocator_adaptor(const scoped_allocator_adaptor& other)noexcept; scoped_allocator_adaptor(scoped_allocator_adaptor&& other)noexcept;template<class OuterA2> scoped_allocator_adaptor(const scoped_allocator_adaptor< OuterA2, InnerAllocs...>& other)noexcept;template<class OuterA2> scoped_allocator_adaptor(scoped_allocator_adaptor< OuterA2, InnerAllocs...>&& other)noexcept; scoped_allocator_adaptor& operator=(const scoped_allocator_adaptor&)=default; scoped_allocator_adaptor& operator=(scoped_allocator_adaptor&&)=default; ~scoped_allocator_adaptor(); inner_allocator_type& inner_allocator()noexcept;const inner_allocator_type& inner_allocator()constnoexcept; outer_allocator_type& outer_allocator()noexcept;const outer_allocator_type& outer_allocator()constnoexcept; pointer allocate(size_type n); pointer allocate(size_type n, const_void_pointer hint);void deallocate(pointer p, size_type n); size_type max_size()const;template<class T, class... Args>void construct(T* p, Args&&... args);template<class T1, class T2, class... Args1, class... Args2>void construct(pair<T1, T2>* p, piecewise_construct_t, tuple<Args1...> x, tuple<Args2...> y);template<class T1, class T2>void construct(pair<T1, T2>* p);template<class T1, class T2, class U, class V>void construct(pair<T1, T2>* p, U&& x, V&& y);template<class T1, class T2, class U, class V>void construct(pair<T1, T2>* p, const pair<U, V>& x);template<class T1, class T2, class U, class V>void construct(pair<T1, T2>* p, pair<U, V>&& x);template<class T>void destroy(T* p); scoped_allocator_adaptor select_on_container_copy_construction()const;};}