toolbox::traits Namespace Reference

Namespaces
namespace	detail

Classes
class	enum_wrapper
	类型安全的枚举包装器/Type-safe enum wrapper More...
struct	function_traits
	函数特征基础模板/Function traits base template More...
struct	function_traits< R(Args...)>
	普通函数的函数特征/Function traits for regular functions More...
struct	function_traits< R(C::*)(Args...)>
	成员函数的函数特征/Function traits for member functions More...
struct	has_size
	检查类型是否有size成员/Check if type has size member More...
struct	has_size< T, std::void_t< decltype(std::declval< T >().size())> >
struct	has_toString
	检查类型是否有toString方法(C++17之前版本)/Check if type has toString method (pre-C++17 version) More...
struct	is_array
	检查类型是否为数组/Check if type is an array More...
struct	is_callable
	检查类型是否可调用/Check if type is callable More...
struct	is_callable< T, std::void_t< decltype(&T::operator())> >
struct	is_const
	检查类型是否为const限定/Check if type is const-qualified More...
struct	is_const_volatile
	检查类型是否同时具有const和volatile限定/Check if type is const-volatile qualified More...
struct	is_function
	检查类型是否为函数/Check if type is a function More...
struct	is_greater_than_comparable
	检查类型T和U是否支持大于运算符（>）/Check if types T and U support the greater-than operator (>) More...
struct	is_greater_than_comparable< T, U, std::void_t< decltype(std::declval< T >() > std::declval< U >())> >
	is_greater_than_comparable 的特化：当T和U支持>运算符时为true_type/Specialization of is_greater_than_comparable: true_type if T and U support > operator More...
struct	is_heap_allocated
	检查类型是否必须堆分配/Check if type must be heap allocated More...
struct	is_iterable
struct	is_iterable< T, void_t< decltype(std::begin(std::declval< T >())), decltype(std::end(std::declval< T >()))> >
struct	is_less_than_comparable
	检查类型T和U是否支持小于运算符（<）/Check if types T and U support the less-than operator (<) More...
struct	is_less_than_comparable< T, U, std::void_t< decltype(std::declval< T >()< std::declval< U >())> >
	is_less_than_comparable 的特化：当T和U支持<运算符时为true_type/Specialization of is_less_than_comparable: true_type if T and U support < operator More...
struct	is_member_pointer
	检查类型是否为成员指针/Check if type is a member pointer More...
struct	is_null_pointer
	检查类型是否为std::nullptr_t/Check if type is std::nullptr_t More...
struct	is_pointer
	检查类型是否为指针/Check if type is a pointer More...
struct	is_printable
	检查类型是否可打印/Check if type is printable More...
struct	is_reference
	检查类型是否为引用/Check if type is a reference More...
struct	is_stack_allocated
	检查类型是否可以栈分配/Check if type can be stack allocated More...
struct	is_volatile
	检查类型是否为volatile限定/Check if type is volatile-qualified More...
struct	remove_all_qualifiers
	移除类型的所有限定符/Remove all qualifiers from type More...
struct	remove_reference
	移除类型的引用/Remove reference from type More...
struct	type_identity
	类型标识特征/Type identity trait More...
struct	type_list
	类型列表容器/Type list container More...

Typedefs
template<typename... >
using	void_t = void

Variables
template<typename T >
constexpr bool	is_iterable_v = is_iterable<T>::value
template<typename T , typename U = T>
constexpr bool	is_less_than_comparable_v
	is_less_than_comparable 的变量模板/Variable template for is_less_than_comparable
template<typename T , typename U = T>
constexpr bool	is_greater_than_comparable_v
	is_greater_than_comparable 的变量模板/Variable template for is_greater_than_comparable

Typedef Documentation

void_t

template<typename... >

using toolbox::traits::void_t = typedef void

Variable Documentation

is_greater_than_comparable_v

template<typename T , typename U = T>

constexpr bool toolbox::traits::is_greater_than_comparable_v

inlineconstexpr

Initial value:

=
    is_greater_than_comparable<T, U>::value

is_greater_than_comparable 的变量模板/Variable template for is_greater_than_comparable

Template Parameters

T	第一个要比较的类型/First type to compare
U	第二个要比较的类型/Second type to compare, defaults to T

if constexpr (toolbox::traits::is_greater_than_comparable_v<int, double>) {
  // 可以安全使用 > 运算符/Can safely use > operator
}

is_iterable_v

template<typename T >

constexpr bool toolbox::traits::is_iterable_v = is_iterable<T>::value

inlineconstexpr

is_less_than_comparable_v

template<typename T , typename U = T>

constexpr bool toolbox::traits::is_less_than_comparable_v

inlineconstexpr

Initial value:

=
    is_less_than_comparable<T, U>::value

is_less_than_comparable 的变量模板/Variable template for is_less_than_comparable

Template Parameters

T	第一个要比较的类型/First type to compare
U	第二个要比较的类型/Second type to compare, defaults to T

if constexpr (toolbox::traits::is_less_than_comparable_v<int, double>) {
  // 可以安全使用 < 运算符/Can safely use < operator
}