Section 3: library functions
std::localeconv – std::localeconv Synopsis Defined in header <clocale> std::lconv* localeconv(); The localeconv function obtains a pointer to a static object of type std::lconv, which represents numeric and monetary formatting rules of the current C locale. Parameters (none) Return value Pointer to the current std::lconv object. Notes Modifying the object references through the returned pointer is…
std::locale::id – Synopsis Public Member Functions id () size_t _M_id () const throw () Friends template<typename _Facet > bool has_facet (const locale &) throw () class locale class locale::_Impl template<typename _Facet > const _Facet & use_facet (const locale &) Detailed Description Facet ID class. The ID class provides facets with an index used to identify…
std::locale::facet – Synopsis Inherited by std::__codecvt_abstract_base< _InternT, _ExternT, encoding_state >, std::__codecvt_abstract_base< char, char, mbstate_t >, std::__codecvt_abstract_base< wchar_t, char, mbstate_t >, std::__ctype_abstract_base< wchar_t >, std::__codecvt_abstract_base< _InternT, _ExternT, _StateT >, std::__ctype_abstract_base< _CharT >, std::__moneypunct_cache< _CharT, _Intl >, std::__numpunct_cache< _CharT >, std::__timepunct< _CharT >, std::__timepunct_cache< _CharT >, std::collate< _CharT >, std::ctype< char >, std::messages< _CharT >, std::money_get< _CharT,…
std::locale::operator==,operator!= – std::locale::operator==,operator!= Synopsis Defined in header <locale> bool operator==( const locale& other ) const; (1) bool operator!=( const locale& other ) const; (2) Tests two locales for equality. Named locales are considered equal if their names are equal. Unnamed locales are considered equal if they are copies of each other. Parameters other – a…
std::locale::name – std::locale::name Synopsis Defined in header<locale> std::string name() const; Returns the name of the locale, which is the name by which it is known to the operating system, such as "POSIX" or "en_US.UTF8" or "English_United States.1252". If the locale is not a copy of a system-supplied locale, the string "*" is returned. Return value…
std::locale::~locale – std::locale::~locale Synopsis Defined in header <locale> ~locale(); Non-virtual destructor which decrements reference counts of all facets held by *this. Those facets whose reference count becomes zero are deleted. Return value (none) Exceptions (none) Example This section is incomplete Reason: no example See also constructs a new locale constructor (public member function)
std::locale::id::id – std::locale::id::id Synopsis Defined in header<locale> id(); (1) id(const id &) = delete; (2) 1) default constructor: creates an object of type std::locale::id with implementation-specific content. 2) copy constructor is deleted; std::locale::id is not copyable. Notes Because locales and facets must be available for the IO stream objects with static storage duration, such as…
std::locale::id – std::locale::id Synopsis Defined in header <locale> class locale::id; The class std::locale::id provides implementation-specific identification of a locale facet. Each class derived from std::locale::facet must have a public static member named id of type std::locale::id and each std::locale object maintains a list of facets it implements, indexed by their ids. Facets with the same…
std::locale::global – std::locale::global Synopsis Defined in header<locale> static locale global(const locale &loc); Replaces the global C++ locale with loc, which means all future calls to the std::locale default constructor will now return a copy of loc.If loc has a name, also replaces the C locale as if by std::setlocale(LC_ALL, loc.name().c_str()); .This function is the only…
std::locale::facet::facet – std::locale::facet::facet Synopsis Defined in header<locale> explicit facet(std::size_t refs = 0); (1) facet(const facet &) = delete; (2) 1) creates a facet with starting reference count refs. If refs is non-zero, the facet will not be deleted when the last locale referencing it goes out of scope. A facet with static or dynamic storage…
std::locale::facet – std::locale::facet Synopsis Defined in header <locale> class locale::facet; std::locale::facet is the base class for facets. It provides a common base class so that locales could store pointers to the facets they implement in a single indexed container, and it abstracts support for facet reference counting. Whenever a facet is added to a locale,…
std::locale::combine – std::locale::combine Synopsis Defined in header<locale> template <class Facet> locale combine(const locale &other) const; Constructs a locale object which is a copy of *this except for the facet of type Facet, which is copied from other. Return value The new, nameless, locale. Exceptions std::runtime_error if other does not implement Facet Example // Run this…
std::locale::classic – std::locale::classic Synopsis Defined in header<locale> static const locale &classic(); Obtains a reference to the C++ locale that implements the classic "C" locale semantics. This locale, unlike the global locale, cannot be altered. Parameters none Return value Returns a reference to the "C" locale. Notes Some of the standard-required facets, such as the UTF-8/UTF-32…
std::locale – std::locale Synopsis Defined in header <locale> class locale; An object of class std::locale is an immutable indexed set of immutable facets. Each stream object of the C++ input/output library is associated with an std::locale object and uses its facets for parsing and formatting of all data. In addition, a locale object is associated…
std::literals::string_view_literals::operator""sv – std::literals::string_view_literals::operator""sv Synopsis Defined in header <string_view> constexpr string_view operator "" sv(const char* str, size_t len) noexcept; (1) (since C++17) constexpr u8string_view operator "" sv(const char8_t* str, size_t len) noexcept; (2) (since C++20) constexpr u16string_view operator "" sv(const char16_t* str, size_t len) noexcept; (3) (since C++17) constexpr u32string_view operator "" sv(const char32_t* str, size_t…
std::literals::string_literals::operator""s – std::literals::string_literals::operator""s Synopsis Defined in header <string> string operator "" s(const char *str, std::size_t len); (1) (since C++14) u8string operator "" s(const char8_t *str, std::size_t len); (2) (since C++20) u16string operator "" s(const char16_t *str, std::size_t len); (3) (since C++14) u32string operator "" s(const char32_t *str, std::size_t len); (4) (since C++14) wstring operator ""…
std::literals::complex_literals::operator""i,operator""if,operator""il – std::literals::complex_literals::operator""i,operator""if,operator""il Synopsis Defined in header<complex> constexpr complex<double> operator""i(long double arg); (1)(since C++ 14) constexpr complex<double> operator""i(unsigned long long arg); constexpr complex<float> operator""if(long double arg); (2)(since C++ 14) constexpr complex<float> operator""if(unsigned long long arg); constexpr complex<long double> operator""il(long double arg); (3)(since C++ 14) constexpr complex<long double> operator""il(unsigned long long arg); Forms a std::complex literal…
std::literals::chrono_literals::operator""y – std::literals::chrono_literals::operator""y Synopsis Defined in header <chrono> constexpr std::chrono::year operator ""y(unsigned long long y) noexcept; (1) (since C++20) Forms a std::chrono::year literal representing a year in the proleptic Gregorian calendar. Parameters y – the year value Return value A std::chrono::year initialized from int(y). If y > 32767, the stored value is unspecified. Possible implementation…
std::literals::chrono_literals::operator""us – std::literals::chrono_literals::operator""us Synopsis Defined in header <chrono> constexpr std::chrono::microseconds operator "" us(unsigned long long us); (1) (since C++14) constexpr std::chrono::duration</*unspecified*/, (2) (since C++14) std::micro> operator "" us(long double us); Forms a std::chrono::duration literal representing microseconds. 1) integer literal, returns exactly std::chrono::microseconds(us) 2) floating-point literal, returns a floating-point duration equivalent to std::chrono::microseconds Parameters us –…
std::literals::chrono_literals::operator""s – std::literals::chrono_literals::operator""s Synopsis Defined in header <chrono> constexpr chrono::seconds operator "" s(unsigned long long secs); (1) (since C++14) constexpr chrono::duration</*unspecified*/> operator "" s(long double secs); (2) (since C++14) Forms a std::chrono::duration literal representing seconds. 1) integer literal, returns exactly std::chrono::seconds(secs) 2) floating-point literal, returns a floating-point duration equivalent to std::chrono::seconds Parameters secs – the…