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std::ios_base::fmtflags – std::ios_base::fmtflags Synopsis typedef /*implementation defined*/ fmtflags; static constexpr fmtflags dec = /*implementation defined*/ static constexpr fmtflags oct = /*implementation defined*/ static constexpr fmtflags hex = /*implementation defined*/ static constexpr fmtflags basefield = dec | oct | hex; static constexpr fmtflags left = /*implementation defined*/ static constexpr fmtflags right = /*implementation defined*/ static constexpr…

std::ios_base::flags – std::ios_base::flags Synopsis fmtflags flags() const; (1) fmtflags flags( fmtflags flags ); (2) Manages format flags. 1) returns current formatting setting 2) replaces current settings with given ones. Parameters         new formatting setting. It can be a combination of the following constants:         Constant Explanation         dec use decimal base for integer I/O: see std::dec         oct use…

std::ios_base::failure – std::ios_base::failure Synopsis Defined in header <ios> class failure; The class std::ios_base::failure defines an exception object that is thrown on failure by the functions in the Input/Output library. std::ios_base::failure may be defined either as a member class of std::ios_base or as a synonym (typedef) for another class with equivalent functionality. (since C++17)  std-ios base-failure-2003-inheritance.svg…

std::ios_base::event_callback – std::ios_base::event_callback Synopsis typedef void (*event_callback)(event type, ios_base &ios, int index); The type of function callbacks that can be registered using register_callback() to be called on specific events. type is a value of type ios_base::event which indicates the type of the event that will invoke this callback. ios refers to the stream object for…

std::ios_base::event – std::ios_base::event Synopsis enum event {erase_event, imbue_event, copyfmt_event}; Specifies the event type which is passed to functions registered by register_callback() on specific events. The following constants are defined: Constant Explanation erase_event issued on ~ios_base() or basic_ios::copyfmt() (before the copy of members takes place) imbue_event issued on imbue() copyfmt_event issued on basic_ios::copyfmt() (after the copy…

std::ios_base::Init – std::ios_base::Init Synopsis class Init; This class is used to ensure that the default C++ streams (std::cin, std::cout, etc.) are properly initialized and destructed. The class tracks how many instances of it are created and initializes the C++ streams when the first instance is constructed as well as flushes the output streams when the…

std::ios_base – std::ios_base Synopsis Defined in header <ios> class ios_base; The class ios_base is a multipurpose class that serves as the base class for all I/O stream classes. It maintains several kinds of data: 1) state information: stream status flags 2) control information: flags that control formatting of both input and output sequences and the…

std::basic_ios – std::basic_ios Synopsis Defined in header <ios> template< class CharT, class Traits = std::char_traits<CharT> > class basic_ios : public std::ios_base The class std::basic_ios provides facilities for interfacing with objects that have std::basic_streambuf interface. Several std::basic_ios objects can refer to one actual std::basic_streambuf object.  std-basic ios-inheritance.svg Inheritance diagram Two specializations for common character types are…

std::io_errc – std::io_errc Synopsis Defined in header <ios> enum class io_errc { stream = 1, (since C++11) }; The scoped enumeration std::io_errc defines the error codes reported by I/O streams in std::ios_base::failure exception objects. Only one error code (std::io_errc::stream) is required, although the implementation may define additional error codes. Because the appropriate specialization of std::is_error_code_enum…

std::invoke – std::invoke Synopsis Defined in header <functional> template< class F, class… Args> (since C++17) std::invoke_result_t<F, Args…> invoke(F&& f, Args&&… args) noexcept(/* see below */); Invoke the Callable object f with the parameters args. As by INVOKE(std::forward<F>(f), std::forward<Args>(args)…). where INVOKE(f, t1, t2, …, tN) is defined as follows: * If f is a pointer_to_member_function of…

std::invalid_argument – std::invalid_argument Synopsis Defined in header <stdexcept> class invalid_argument; Defines a type of object to be thrown as exception. It reports errors that arise because an argument value has not been accepted. This exception is thrown by std::bitset::bitset, and the std::stoi and std::stof families of functions.  std-invalid argument-inheritance.svg Inheritance diagram Member functions               constructs the…

std::integral_constant – std::integral_constant Synopsis Defined in header<type_traits> template <class T, T v> (since C++ 11) struct integral_constant; std::integral_constant wraps a static constant of specified type. It is the base class for the C++ type traits. Helper templates A helper alias template std::bool_constant is defined for the common case where T is bool. (since C++17) template…

std::integer_sequence – std::integer_sequence Synopsis Defined in header <utility> template< class T, T… Ints > (since C++14) class integer_sequence; The class template std::integer_sequence represents a compile-time sequence of integers. When used as an argument to a function_template, the parameter_pack Ints can be deduced and used in pack expansion. Template parameters T – an integer type to…

std::inserter – std::inserter Synopsis Defined in header <iterator> template< class Container > (until C++20) std::insert_iterator<Container> inserter( Container& c, typename Container::iterator i ); template< class Container > (since C++20) constexpr std::insert_iterator<Container> inserter( Container& c, ranges::iterator_t<Container> i ); inserter is a convenience function template that constructs a std::insert_iterator for the container c and its iterator i with…

std::insert_iterator<Container>::operator= – std::insert_iterator<Container>::operator= Synopsis insert_iterator<Container> &(until C++ 11) operator=(typename Container::const_reference value); insert_iterator<Container> &(since C++ 11) operator=(const typename Container::value_type &value); (until C++ 20) constexpr insert_iterator<Container> &(1)(since C++ 20) operator=(const typename Container::value_type &value); insert_iterator<Container> &(since C++ 11) operator=(typename Container::value_type &&value); (2)(until C++ 20) constexpr insert_iterator<Container> &(since C++ 20) operator=(typename Container::value_type &&value); Inserts the given value value to…

std::insert_iterator<Container>::insert_iterator – std::insert_iterator<Container>::insert_iterator Synopsis insert_iterator() = default; (1) (since C++20) insert_iterator( Container& c, typename Container::iterator i ); (2) (until C++20) constexpr insert_iterator( Container& c, ranges::iterator_t<Container> i ); (since C++20) 1) Initializes the underlying pointer to container with nullptr and value-initializes the underlying iterator. (since C++20) 2) Initializes the underlying pointer to the container to std::addressof(c)…

std::insert_iterator – std::insert_iterator Synopsis Defined in header<iterator> template <class Container> class insert_iterator : public std::iterator<std::output_iterator_tag, (until C++ 17) void, void, void, void> template <class Container> (since C++ 17) class insert_iterator; std::insert_iterator is a LegacyOutputIterator that inserts elements into a container for which it was constructed, at the position pointed to by the supplied iterator. The…

std::input_iterator_tag – Synopsis Inherited by std::forward_iterator_tag. Detailed Description Marking input iterators. Definition at line 89 of file stl_iterator_base_types.h. Author Generated automatically by Doxygen for libstdc++ from the source code.

std::input_iterator_tag,std::output_iterator_tag,std::forward_iterator_tag,std::bidirectional_iterator_tag,std::random_access_iterator_tag,std::contiguous_iterator_tag – std::input_iterator_tag,std::output_iterator_tag,std::forward_iterator_tag,std::bidirectional_iterator_tag,std::random_access_iterator_tag,std::contiguous_iterator_tag Synopsis Defined in header <iterator> struct input_iterator_tag { }; struct output_iterator_tag { }; struct forward_iterator_tag : public input_iterator_tag { }; struct bidirectional_iterator_tag : public forward_iterator_tag { }; struct random_access_iterator_tag : public bidirectional_iterator_tag { }; struct contiguous_iterator_tag: public random_access_iterator_tag { }; (since C++20) Defines the category of an iterator. Each tag is an…

std::input_iterator_tag,std::output_iterator_tag,std::forward_iterator_tag, – std::input_iterator_tag,std::output_iterator_tag,std::forward_iterator_tag, Synopsis                       std::contiguous_iterator_tag Defined in header<iterator> struct input_iterator_tag { }; struct output_iterator_tag { }; struct forward_iterator_tag : public input_iterator_tag { }; struct bidirectional_iterator_tag : public forward_iterator_tag { }; struct random_access_iterator_tag : public bidirectional_iterator_tag { }; struct contiguous_iterator_tag : public random_access_iterator_tag { (since C++ 20) }; Defines the category of an iterator. Each tag…