iterator insert( const value_type& value ); (1) (since C++11) template< class P > iterator insert( P&& value ); (2) (since C++11) iterator insert( value_type&& value ); (2) (since C++17) iterator insert( const_iterator hint, const value_type& value ); (3) (since C++11) template< class P > iterator insert( const_iterator hint, P&& value ); (4) (since C++11) iterator insert( const_iterator hint, value_type&& value

void clear(); (since C++11) Clears the state of the error condition. Sets the error code to ​0​ and error category to std::generic_category. Parameters (none). Return value (none). Exceptions noexcept specification: noexcept

Defined in header <type_traits> template< class T > struct is_null_pointer; (since C++14) Checks whether T is the type std::nullptr_t. Provides the member constant value that is equal to true, if T is the type std::nullptr_t, const std::nullptr_t, volatile std::nullptr_t, or const volatile std::nullptr_t. Otherwise, value is equal to false. Template parameters T - a type to check Helper variable template template< class T > constexpr bool is_nul

Defined in header <fstream> template< class CharT, class Traits = std::char_traits<CharT> > class basic_ifstream : public std::basic_istream<CharT, Traits> The class template basic_ifstream implements high-level input operations on file based streams. It interfaces a file-based streambuffer (std::basic_filebuf) with the high-level interface of (std::basic_istream). A typical implementation of std::basic_ifstream holds only one non-derived data me

This header is part of the Input/Output library. Includes <iosfwd> Classes ios_base manages formatting flags and input/output exceptions (class) basic_ios manages an arbitrary stream buffer (class template) fpos represents absolute position in a stream or a file (class template) io_errc (C++11) the IO stream error codes (enum) iostream_category (C++11) identifies the iostream error category (function) is_error_code_enum<std::io_errc> (C++11

Customizes the C++ operators for operands of user-defined types. Syntax Overloaded operators are functions with special function names: operator op (1) operator type (2) operator new operator new [] (3) operator delete operator delete [] (4) operator "" suffix-identifier (5) (since C++11) op - any of the following 38 operators:+ - * / % ˆ & | ~ ! = < > += -= *= /= %= ˆ= &= |= << >> >>= <<= == != <= >= &&

void operator+=( const std::valarray<T>& other ); void operator-=( const std::valarray<T>& other ); void operator*=( const std::valarray<T>& other ); void operator/=( const std::valarray<T>& other ); void operator%=( const std::valarray<T>& other ); void operator&=( const std::valarray<T>& other ); void operator|=( const std::valarray<T>& other ); void operator^=( const std::vala

Initializes an aggregate from braced-init-list. Syntax T object = {arg1, arg2, ...}; (1) T object {arg1, arg2, ...}; (2) (since C++11) Explanation Aggregate initialization is a form of list-initialization, which initializes aggregates. An aggregate is an object of the type that is one of the following. array type class type (typically, struct or union), that has no private or protected non-static data members no user-provided constructors (explicitly defaulted or dele

Defined in header <random> template< class RealType = double > class uniform_real_distribution; (since C++11) Produces random floating-point values i, uniformly distributed on the interval [a, b), that is, distributed according to the probability function: P(i|a,b) = 1b − a . std::uniform_real_distribution satisfies all requirements of RandomNumberDistribution. Template parameters RealType - The result type generated by the generator. The effect is undefi

Defined in header <new> class bad_alloc; std::bad_alloc is the type of the object thrown as exceptions by the allocation functions to report failure to allocate storage. Inheritance diagram. Member functions (constructor) constructs the bad_alloc object (public member function) operator= replaces a bad_alloc object (public member function) what returns explanatory string (public member function) std::bad_alloc::bad_alloc bad_alloc(); Con