Section 3: library functions
std::mbrlen – std::mbrlen Synopsis Defined in header<cwchar> std::size_t mbrlen(const char *s, std::size_t n, std::mbstate_t *ps); Determines the size, in bytes, of the remainder of the multibyte character whose first byte is pointed to by s, given the current conversion state ps. This function is equivalent to the call std::mbrtowc(nullptr, s, n, ps?ps:&internal) for some hidden…
std::mblen – std::mblen Synopsis Defined in header<cstdlib> int mblen(const char *s, std::size_t n); Determines the size, in bytes, of the multibyte character whose first byte is pointed to by s. If s is a null pointer, resets the global conversion state and determines whether shift sequences are used. This function is equivalent to the call…
std::max_element – std::max_element Synopsis Defined in header <algorithm> template< class ForwardIt > (until C++17) ForwardIt max_element( ForwardIt first, ForwardIt last ); template< class ForwardIt > (since C++17) constexpr ForwardIt max_element( ForwardIt first, ForwardIt last ); template< class ExecutionPolicy, class ForwardIt > (2) (since C++17) ForwardIt max_element( ExecutionPolicy&& policy, ForwardIt first, ForwardIt last ); (1) template<…
std::max_align_t – std::max_align_t Synopsis Defined in header <cstddef> typedef /*implementation-defined*/ max_align_t; (since C++11) std::max_align_t is a trivial standard-layout type whose alignment_requirement is at least as strict (as large) as that of every scalar type. Notes Pointers returned by allocation functions such as std::malloc are suitably aligned for any object, which means they are aligned at…
std::max – std::max Synopsis Defined in header<algorithm> template <class T> (until C++ 14) const T &max(const T &a, const T &b); template <class T> (since C++ 14) constexpr const T &max(const T &a, const T &b); template <class T, class Compare> (until C++ 14) const T &max(const T &a, const T &b, Compare comp); template…
std::match_results<BidirIt,Alloc>::~match_results – std::match_results<BidirIt,Alloc>::~match_results Synopsis ~match_results(); (since C++11) Destructs the match_results object and the associated sub-matches. Complexity Linear in the number of sub-matches.
std::mask_array<T>::operator= – std::mask_array<T>::operator= Synopsis void operator=(const T &value) const; (1) void operator=(const std::valarray<T> &val_arr) const; (2) const mask_array & operator=(const mask_array &sl_arr) const; (3)(since C++ 11) Assigns values to all referred elements. 1) Assigns value to all of the elements. 2) Assigns the elements of val_arr to the referred to elements of *this. 3) Assigns…
std::mask_array<T>::~mask_array – std::mask_array<T>::~mask_array Synopsis ~mask_array(); Destroys the indexes in the array. The elements referred to by the object are not modified.
std::mask_array – std::mask_array Synopsis Defined in header <valarray> template< class T > class mask_array; std::mask_array is a helper template used by the valarray_subscript_operator with std::valarray<bool> argument. It has reference semantics and provides access to the subset of the valarray consisting of the elements whose indices correspond to true values in the std::valarray<bool> mask. Member types…
std::map<Key,T,Compare,Allocator>::~map – std::map<Key,T,Compare,Allocator>::~map Synopsis ~map(); Destructs the container. The destructors of the elements are called and the used storage is deallocated. Note, that if the elements are pointers, the pointed-to objects are not destroyed. Complexity Linear in the size of the container.
std::malloc – std::malloc Synopsis Defined in header<cstdlib> void *malloc(std::size_t size); Allocates size bytes of uninitialized storage. If allocation succeeds, returns a pointer to the lowest (first) byte in the allocated memory block that is suitably aligned for any scalar type. If size is zero, the behavior is implementation defined (null pointer may be returned, or…
std::make_unsigned – std::make_unsigned Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct make_unsigned; If T is an integral (except bool) or enumeration type, provides the member typedef type which is the unsigned integer type corresponding to T, with the same cv-qualifiers. The unsigned integer type corresponding to an enumeration type is the unsigned…
std::make_unique,std::make_unique_default_init – std::make_unique,std::make_unique_default_init Synopsis Defined in header<memory> template <class T, class… Args> (1)(since C++ 14) unique_ptr<T> make_unique(Args &&…args); (only for non-array types) template< class T > (2) (since C++14) unique_ptr<T> make_unique( std::size_t size ); (only for array types with unknown bound) template< class T, class… Args > (3) (since C++14) /* unspecified */ make_unique( Args&&……
std::make_tuple – std::make_tuple Synopsis Defined in header <tuple> template< class… Types > (since C++11) tuple<VTypes…> make_tuple( Types&&… args ); (constexpr since C++14) Creates a tuple object, deducing the target type from the types of arguments. For each Ti in Types…, the corresponding type Vi in VTypes… is std::decay<Ti>::type unless application of std::decay results in std::reference_wrapper<X>…
std::make_signed – std::make_signed Synopsis Defined in header<type_traits> template <class T> (since C++ 11) struct make_signed; If T is an integral (except bool) or enumeration type, provides the member typedef type which is the signed integer type corresponding to T, with the same cv-qualifiers. Otherwise, the behavior is undefined. Member types Name Definition type the signed…
std::make_shared,std::make_shared_default_init – std::make_shared,std::make_shared_default_init Synopsis Defined in header <memory> template< class T, class… Args > (1) (since C++11) shared_ptr<T> make_shared( Args&&… args ); (T is not array) template<class T> (2) (since C++20) shared_ptr<T> make_shared( std::size_t N ); (T is U[]) template<class T> (3) (since C++20) shared_ptr<T> make_shared(); (T is U[N]) template<class T> (4) (since C++20) shared_ptr<T>…
std::make_reverse_iterator – std::make_reverse_iterator Synopsis Defined in header <iterator> template <class Iter> (since C++14) std::reverse_iterator<Iter> make_reverse_iterator( Iter i ); (until C++17) template <class Iter> (since C++17) constexpr std::reverse_iterator<Iter> make_reverse_iterator( Iter i ); make_reverse_iterator is a convenience function template that constructs a std::reverse_iterator for the given iterator i with the type deduced from the type of the…
std::make_pair – std::make_pair Synopsis Defined in header <utility> template< class T1, class T2 > (until C++11) std::pair<T1,T2> make_pair( T1 t, T2 u ); template< class T1, class T2 > (since C++11) std::pair<V1,V2> make_pair( T1&& t, T2&& u ); (until C++14) template< class T1, class T2 > (since C++14) constexpr std::pair<V1,V2> make_pair( T1&& t, T2&& u…
std::make_optional – std::make_optional Synopsis Defined in header<optional> template <class T> (1)(since C++ 17) constexpr std::optional<std::decay_t<T>> make_optional(T &&value); template <class T, class… Args> (2)(since C++ 17) constexpr std::optional<T> make_optional(Args &&…args); template <class T, class U, class… Args> (3)(since C++ 17) constexpr std::optional<T> make_optional(std::initializer_list<U> il, Args &&…args); 1) Creates an optional object from value. Effectively calls std::optional<std::decay_t<T>>(std::forward<T>(value))…
std::make_obj_using_allocator – std::make_obj_using_allocator Synopsis Defined in header <memory> template< class T, class Alloc, class… Args > (since C++20) T make_obj_using_allocator( const Alloc& alloc, Args&&… args ) Creates an object of the given type T by means of uses-allocator_construction Equivalent to return std::make_from_tuple<T>( std::uses_allocator_construction_args<T>(alloc, std::forward<Args>(args)…) ); Parameters alloc – the allocator to use. args – the…