Linux Manuals

std::has_trivial_copy_assign< _Tp > – Synopsis Inherits std::integral_constant< bool, __has_trivial_assign(_Tp)>. Public Types typedef integral_constant < bool, __v > type" typedef bool value_type Public Member Functions constexpr operator value_type () Static Public Attributes static constexpr bool value Detailed Description template<typename _Tp>struct std::has_trivial_copy_assign< _Tp > has_trivial_copy_assign (temporary legacy) Definition at line 1223 of file type_traits. Author Generated automatically…

std::has_facet – std::has_facet Synopsis Defined in header<locale> template <class Facet> (until C++ 11) bool has_facet(const locale &loc) throw(); template <class Facet> (since C++ 11) bool has_facet(const locale &loc) noexcept; Checks if the locale loc implements the facet Facet. Parameters loc – the locale object to query Return value Returns true if the facet Facet was…

std::hardware_destructive_interference_size,std::hardware_constructive_interference_size – std::hardware_destructive_interference_size,std::hardware_constructive_interference_size Synopsis Defined in header <new> inline constexpr std::size_t (1) (since C++17) hardware_destructive_interference_size = /*implementation-defined*/; inline constexpr std::size_t (2) (since C++17) hardware_constructive_interference_size = /*implementation-defined*/; 1) Minimum offset between two objects to avoid false sharing. Guaranteed to be at least alignof(std::max_align_t) struct keep_apart { alignas(std::hardware_destructive_interference_size) std::atomic<int> cat; alignas(std::hardware_destructive_interference_size) std::atomic<int> dog; }; 2) Maximum size…

std::gslice_array<T>::operator= – std::gslice_array<T>::operator= Synopsis void operator=(const T &value) const; (1) void operator=(const std::valarray<T> &val_arr) const; (2) const gslice_array & operator=(const gslice_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::gslice_array<T>::~gslice_array – std::gslice_array<T>::~gslice_array Synopsis ~gslice_array(); Destroys the indexes in the array. The elements referred to by the object are not modified.

std::gslice_array – std::gslice_array Synopsis Defined in header <valarray> template< class T > class gslice_array; std::gslice_array is a helper template used by std::gslice subscript operator. It has reference semantics to a subset of the array specified by the std::gslice object. Member types Type Definition value_type T Member functions               constructs a gslice_array constructor (public member function)               destroys…

std::gslice – std::gslice Synopsis Defined in header <valarray> class gslice; std::gslice is the selector class that identifies a subset of std::valarray indices defined by a multi-level set of strides and sizes. Objects of type std::gslice can be used as indices with valarray’s operator[] to select, for example, columns of a multidimensional array represented as a…

std::greater_equal<void> – std::greater_equal<void> Synopsis Defined in header<functional> template <> (since C++ 14) class greater_equal<void>; std::greater_equal<> is a specialization of std::greater_equal with parameter and return type deduced. Member types Member type Definition is_transparent /* unspecified */ Member functions            tests if the lhs compares greater or equal than rhs operator() (public member function)  std::greater_equal<>::operator() template< class T,…

std::greater<void> – std::greater<void> Synopsis Defined in header<functional> template <> (since C++ 14) class greater<void>; std::greater<> is a specialization of std::greater with parameter and return type deduced. Member types Member type Definition is_transparent /* unspecified */ Member functions            tests if the lhs compares greater than rhs operator() (public member function)  std::greater<>::operator() template< class T, class U>…

std::gmtime – std::gmtime Synopsis Defined in header<ctime> std::tm *gmtime(const std::time_t *time); Converts given time since epoch as std::time_t value into calendar time, expressed in Coordinated Universal Time (UTC). Parameters time – pointer to a time_t object to convert Return value Pointer to a static internal std::tm object on success, or null pointer otherwise. The structure…

std::getwchar – std::getwchar Synopsis Defined in header <cwchar> wint_t getwchar(); Reads the next wide character from stdin. Parameters (none) Return value The obtained wide character or WEOF if an error has occurred or the end of file reached See also         reads a character from stdin getchar (function)         gets a wide character from a file stream…

std::gets – std::gets Synopsis Defined in header <cstdio> char* gets( char* str ); (deprecated in C++11)                             (removed in C++14) Reads stdin into given character string until a newline character is found or end-of-file occurs. Parameters str – character string to be written Return value str on success, NULL on failure. If the failure has been…

std::getline – std::getline Synopsis Defined in header <string> template< class CharT, class Traits, class Allocator > std::basic_istream<CharT,Traits>& getline( std::basic_istream<CharT,Traits>& input, (1) std::basic_string<CharT,Traits,Allocator>& str, CharT delim ); template< class CharT, class Traits, class Allocator > std::basic_istream<CharT,Traits>& getline( std::basic_istream<CharT,Traits>&& input, (1) (since C++11) std::basic_string<CharT,Traits,Allocator>& str, CharT delim ); template< class CharT, class Traits, class Allocator > std::basic_istream<CharT,Traits>&…

std::getenv – std::getenv Synopsis Defined in header<cstdlib> char *getenv(const char *env_var); Searches the environment list provided by the host environment (the OS), for a string that matches the C string pointed to by env_var and returns a pointer to the C string that is associated with the matched environment list member. This function is not…

std::getchar – std::getchar Synopsis Defined in header<cstdio> int getchar(); Reads the next character from stdin. Equivalent to std::getc(stdin). Parameters (none) Return value The obtained character on success or EOF on failure. If the failure has been caused by end of file condition, additionally sets the eof indicator (see feof()) on stdin. If the failure has…

std::get_unexpected – std::get_unexpected Synopsis Defined in header <exception>                                                     (since C++11) std::unexpected_handler get_unexpected() noexcept; (deprecated)                                                     (removed in C++17) Returns the currently installed std::unexpected_handler, which may be a null pointer. This function is thread-safe. Prior call to std::set_unexpected synchronizes-with (see std::memory_order) the subsequent calls to this function. Parameters (none) Return value The currently installed std::unexpected_handler. See also…

std::get_time – std::get_time Synopsis Defined in header<iomanip> template <class CharT> (since C++ 11) /*unspecified*/ get_time(std::tm *tmb, const CharT *fmt); When used in an expression in >> get_time(tmb, fmt), parses the character input as a date/time value according to format string fmt according to the std::time_get facet of the locale currently imbued in the input stream…

std::get_terminate – std::get_terminate Synopsis Defined in header <exception> std::terminate_handler get_terminate() noexcept; (since C++11) Returns the currently installed std::terminate_handler, which may be a null pointer. This function is thread-safe. Prior call to std::set_terminate synchronizes-with (see std::memory_order) this function. (since C++11) Parameters (none) Return value The currently installed std::terminate_handler. See also                   the type of the function called…

std::get_temporary_buffer – std::get_temporary_buffer Synopsis Defined in header <memory> template< class T > (deprecated in C++17) std::pair< T*, std::ptrdiff_t > get_temporary_buffer( std::ptrdiff_t count ); (removed in C++20) Allocates uninitialized contiguous storage, which should be sufficient to store up to count adjacent objects of type T. The request is non-binding and the implementation may allocate less or…

std::get_pointer_safety – std::get_pointer_safety Synopsis Defined in header <memory> std::pointer_safety get_pointer_safety() noexcept; (since C++11) Obtains the implementation-defined pointer safety model, which is a value of type std::pointer_safety. Parameters (none) Return value The pointer safety used by this implementation. Example // Run this code #include <iostream> #include <memory> int main() { std::cout << "Pointer safety: "; switch…