The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
std::isalnum(std::locale) – std::isalnum(std::locale) Synopsis Defined in header<locale> template <class charT> bool isalnum(charT ch, const locale &loc); Checks if the given character classified as an alphanumeric character by the given locale’s std::ctype facet. Parameters ch – character loc – locale Return value Returns true if the character is classified as alphanumeric, false otherwise. Possible implementation template<…
std::is_volatile – std::is_volatile Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_volatile; If T is a volatile-qualified type (that is, volatile, or const volatile), provides the member constant value equal true. For any other type, value is false. Template parameters T – a type to check Helper variable template template< class T…
std::is_void – std::is_void Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_void; Checks whether T is a void type. Provides the member constant value that is equal to true, if T is the type void, const void, volatile void, or const volatile void. Otherwise, value is equal to false. Template parameters T…
std::is_unsigned – std::is_unsigned Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_unsigned; If T is an arithmetic type, provides the member constant value equal true if T(0) < T(-1): this results in true for the unsigned integer types and the type bool and in false for the signed integer types and the…
std::is_union – std::is_union Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_union; Checks whether T is a union type. Provides the member constant value, which is equal to true if T is a union type . Otherwise, value is equal to false. Template parameters T – a type to check Helper variable…
std::is_unbounded_array – std::is_unbounded_array Synopsis Defined in header<type_traits> template <class T> (since C++ 20) struct is_unbounded_array; Checks whether T is an array_type_of_unknown_bound. Provides the member constant value which is equal to true, if T is an array type of unknown bound. Otherwise, value is equal to false. Template parameters T – a type to check Helper…
std::is_trivially_destructible< _Tp > – Synopsis Inherits type< is_destructible< _Tp >, integral_constant< bool, __has_trivial_destructor(_Tp)> >. Detailed Description template<typename _Tp>struct std::is_trivially_destructible< _Tp > is_trivially_constructible (still unimplemented) is_trivially_default_constructible (still unimplemented) is_trivially_copy_constructible (still unimplemented) is_trivially_move_constructible (still unimplemented) is_trivially_assignable (still unimplemented) is_trivially_copy_assignable (still unimplemented) is_trivially_move_assignable (still unimplemented) is_trivially_destructible Definition at line 1204 of file type_traits. Author Generated automatically by Doxygen…
std::is_trivially_copyable – std::is_trivially_copyable Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_trivially_copyable; If T is a TriviallyCopyable type, provides the member constant value equal true. For any other type, value is false. The only trivially copyable types are scalar types, trivially copyable classes, and arrays of such types/classes (possibly const-qualified, but not…
std::is_trivial – std::is_trivial Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_trivial; If T is TrivialType (that is, a scalar type, a trivially copyable class with a trivial_default_constructor, or array of such type/class, possibly cv-qualified), provides the member constant value equal true. For any other type, value is false. The behavior is…
std::is_swappable_with,std::is_swappable,std::is_nothrow_swappable_with,std::is_nothrow_swappable – std::is_swappable_with,std::is_swappable,std::is_nothrow_swappable_with,std::is_nothrow_swappable Synopsis Defined in header<type_traits> template <class T, class U> (1)(since C++ 17) struct is_swappable_with; template <class T> (2)(since C++ 17) struct is_swappable; template <class T, class U> (3)(since C++ 17) struct is_nothrow_swappable_with; template <class T> (4)(since C++ 17) struct is_nothrow_swappable; 1) If the expressions swap(std::declval<T>(), std::declval<U>()) and swap(std::declval<U>(), std::declval<T>()) are both well-formed…
std::is_swappable_with,std::is_swappable,std::is_nothrow_swappable_with, – std::is_swappable_with,std::is_swappable,std::is_nothrow_swappable_with, Synopsis Defined in header<type_traits> template <class T, class U> (1)(since C++ 17) struct is_swappable_with; template <class T> (2)(since C++ 17) struct is_swappable; template <class T, class U> (3)(since C++ 17) struct is_nothrow_swappable_with; template <class T> (4)(since C++ 17) struct is_nothrow_swappable; 1) If the expressions swap(std::declval<T>(), std::declval<U>()) and swap(std::declval<U>(), std::declval<T>()) are both well-formed in unevaluated context…
std::is_standard_layout – std::is_standard_layout Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_standard_layout; If T is a standard layout type (that is, a scalar type, a standard-layout class, or an array of such type/class, possibly cv-qualified), provides the member constant value equal true. For any other type, value is false. A standard-layout_class is…
std::is_sorted_until – std::is_sorted_until Synopsis Defined in header <algorithm> template< class ForwardIt > (since C++11) ForwardIt is_sorted_until( ForwardIt first, ForwardIt last ); (until C++20) template< class ForwardIt > (since C++20) constexpr ForwardIt is_sorted_until( ForwardIt first, ForwardIt last ); template< class ExecutionPolicy, class ForwardIt > (2) (since C++17) ForwardIt is_sorted_until( ExecutionPolicy&& policy, ForwardIt first, ForwardIt last );…
std::is_sorted – std::is_sorted Synopsis Defined in header <algorithm> template< class ForwardIt > (since C++11) bool is_sorted( ForwardIt first, ForwardIt last ); (until C++20) template< class ForwardIt > (since C++20) constexpr bool is_sorted( ForwardIt first, ForwardIt last ); template< class ExecutionPolicy, class ForwardIt > (2) (since C++17) bool is_sorted( ExecutionPolicy&& policy, ForwardIt first, ForwardIt last );…
std::is_signed – std::is_signed Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_signed; If T is an arithmetic type, provides the member constant value equal true if T(-1) < T(0): this results in true for the floating-point types and the signed integer types, and in false for the unsigned integer types and the…
std::is_scalar – std::is_scalar Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_scalar; If T is a scalar_type (that is a possibly cv-qualified arithmetic, pointer, pointer_to_member, enumeration, or std::nullptr_t type), provides the member constant value equal true. For any other type, value is false. Template parameters T – a type to check Helper…
std::is_same – std::is_same Synopsis Defined in header<type_traits> template <class T, class U> (since C++ 11) struct is_same; If T and U name the same type (including const/volatile qualifications), provides the member constant value equal to true. Otherwise value is false. Commutativity is satisfied, i.e. for any two types T and U, is_same<T, U>::value == true…
std::is_rvalue_reference – std::is_rvalue_reference Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_rvalue_reference; Checks whether T is a rvalue reference type. Provides the member constant value which is equal to true, if T is a rvalue reference type. Otherwise, value is equal to false. Template parameters T – a type to check Helper…
std::is_reference – std::is_reference Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_reference; If T is a reference type (lvalue reference or rvalue reference), provides the member constant value equal true. For any other type, value is false. Template parameters T – a type to check Helper variable template template< class T >…
std::is_polymorphic – std::is_polymorphic Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct is_polymorphic; If T is a polymorphic_class (that is, a non-union class that declares or inherits at least one virtual function), provides the member constant value equal true. For any other type, value is false. If T is a non-union class type,…