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C
C++
算法 | Algorithm
原子性操作 | Atomic operations
概念 | Concepts
容器 | Containers
动态内存管理 | Dynamic memory management
文件系统 | Filesystem
输入/输出 | Input/output
迭代器 | Iterator
关键词 | Keywords
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本土化 | Localizations
数字 | Numerics
规律表达 | Regular expressions
标准库头文件 | Standard library header files
字符串 | Strings
线程支持 | Thread support
应用 | Utilities
assert
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CLOCKS_PER_SEC
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Dynamic memory management
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FLT_EVAL_METHOD
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NULL
offsetof
operators (delete[])
operators (new[])
operators (std::bitset)
operators (std::bitset)
operators (std::bitset)
operators (std::chrono::duration)
operators (std::chrono::duration)
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operators (std::function)
operators (std::optional)
operators (std::pair)
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operators (std::time_point)
operators (std::tuple)
operators (std::unique_ptr)
operators (std::variant)
Program support utilities
setjmp
SIGABRT
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std::any
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std::any::emplace
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std::apply
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std::bad_alloc
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std::bad_exception
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std::bad_typeid
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std::bitset::reference
std::bitset::reset
std::bitset::set
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std::bitset::test
std::bitset::to_string
std::bitset::to_ullong
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std::bit_and
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std::bit_not
std::bit_not<void>
std::bit_or
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std::bit_xor
std::bit_xor<void>
std::boyer_moore_horspool_searcher
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std::byte
std::calloc
std::chars_format
std::chrono::abs(std::chrono::duration)
std::chrono::ceil(std::chrono::duration)
std::chrono::ceil(std::chrono::time_point)
std::chrono::duration
std::chrono::duration::count
std::chrono::duration::duration
std::chrono::duration::max
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std::chrono::duration::operator-
std::chrono::duration::operator--
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std::chrono::duration::operators (%=)
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std::chrono::duration::zero
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std::chrono::duration_values
std::chrono::duration_values::max
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std::chrono::floor(std::chrono::duration)
std::chrono::floor(std::chrono::time_point)
std::chrono::high_resolution_clock
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std::chrono::round(std::chrono::duration)
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std::chrono::steady_clock
std::chrono::steady_clock::now
std::chrono::system_clock
std::chrono::system_clock::from_time_t
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std::chrono::system_clock::to_time_t
std::chrono::time_point
std::chrono::time_point::max
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std::chrono::time_point::time_point
std::chrono::time_point::time_since_epoch
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std::clock
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std::common_type
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std::conditional
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std::const_mem_fun1_ref_t
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std::function
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std::function::target
std::function::target_type
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std::getenv
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std::hash
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std::initializer_list
std::initializer_list::begin
std::initializer_list::end
std::initializer_list::initializer_list
std::initializer_list::size
std::integer_sequence
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std::invalid_argument
std::invoke
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std::in_place
std::in_place_index
std::in_place_index_t
std::in_place_t
std::in_place_t
std::in_place_type
std::in_place_type_t
std::is_abstract
std::is_aggregate
std::is_arithmetic
std::is_array
std::is_assignable
std::is_base_of
std::is_bind_expression
std::is_class
std::is_compound
std::is_const
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std::is_copy_assignable
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std::is_default_constructible
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std::is_empty
std::is_enum
std::is_error_code_enum
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std::is_error_condition_enum
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std::is_final
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std::is_function
std::is_fundamental
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std::is_literal_type
std::is_lvalue_reference
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std::is_nothrow_assignable
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std::is_nothrow_default_constructible
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std::is_nothrow_swappable
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std::is_null_pointer
std::is_object
std::is_placeholder
std::is_pod
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std::is_reference
std::is_rvalue_reference
std::is_same
std::is_scalar
std::is_signed
std::is_standard_layout
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std::is_trivially_assignable
std::is_trivially_constructible
std::is_trivially_copyable
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std::is_trivially_copy_constructible
std::is_trivially_default_constructible
std::is_trivially_destructible
std::is_trivially_move_assignable
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std::is_union
std::is_unsigned
std::is_void
std::is_volatile
std::jmp_buf
std::launder
std::length_error
std::less
std::less<void>
std::less_equal
std::less_equal<void>
std::literals::chrono_literals::operator""h
std::literals::chrono_literals::operator""min
std::literals::chrono_literals::operator""ms
std::literals::chrono_literals::operator""ns
std::literals::chrono_literals::operator""s
std::literals::chrono_literals::operator""us
std::localtime
std::logical_and
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std::make_from_tuple
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std::shared_ptr::operators (>=)
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std::uses_allocator<std::function>

STD：：用途[医]分配器<std：：function>

Defined in header ​​
template< class R, class... ArgTypes, class Alloc > struct uses_allocator<std::function<R(ArgTypes...)>, Alloc> : std::true_type { };​(since C++11) (until C++17)

这种专业化std::uses_allocator通知其他库组件所有类型的对象std::function支撑用途分配器构造，即使它们没有嵌套的allocator_type...

继承自STD：积分[医]常量

成员常数

value statictrue (public static member constant)

成员函数

operator boolconverts the object to bool, returns value (public member function)
operator() (C++14)returns value (public member function)

成员类型

TypeDefinition
value_typebool
typestd::integral_constant<bool, value>

另见

uses_allocator (C++11)checks if the specified type supports uses-allocator construction (class template)

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