class CharT,
class Traits = std::char_traits<CharT>,
class Allocator = std::allocator<CharT>
> class basic_ostringstream
The class template std::basic_ostringstream implements output operations on string based streams. It effectively stores an instance of std::basic_string and performs output operations to it.
At the low level, the class essentially wraps a raw string device implementation of std::basic_stringbuf into a higher-level interface of std::basic_ostream. The complete interface to unique std::basic_stringbuf members is provided.
Inheritance diagram
Several typedefs for common character types are provided:
Type Definitionstd::ostringstream std::basic_ostringstream<char> std::wostringstream std::basic_ostringstream<wchar_t> [edit] Member types Member type Definition char_type CharT[edit] traits_type Traits; the program is ill-formed if Traits::char_type is not CharT.[edit] int_type Traits::int_type[edit] pos_type Traits::pos_type[edit] off_type Traits::off_type[edit] allocator_type Allocator[edit] [edit] Exposition-only members Name Definition sb the std::basic_stringbuf<CharT, Traits, Allocator> used as the underlying buffer
std::basic_ostream<CharT,Traits>) [edit] Unformatted output inserts a character
std::basic_ostream<CharT,Traits>) [edit] inserts blocks of characters
std::basic_ostream<CharT,Traits>) [edit] Positioning returns the output position indicator
std::basic_ostream<CharT,Traits>) [edit] sets the output position indicator
std::basic_ostream<CharT,Traits>) [edit] Miscellaneous synchronizes with the underlying storage device
std::basic_ostream<CharT,Traits>) [edit] Member classes implements basic logic for preparation of the stream for output operations
std::basic_ostream<CharT,Traits>) [edit] Inherited from std::basic_ios Member types Member type Definition char_type CharT traits_type Traits int_type Traits::int_type pos_type Traits::pos_type off_type Traits::off_type Member functions State functions checks if no error has occurred i.e. I/O operations are available
std::basic_ios<CharT,Traits>) [edit] checks if end-of-file has been reached
std::basic_ios<CharT,Traits>) [edit] checks if an error has occurred
std::basic_ios<CharT,Traits>) [edit] checks if a non-recoverable error has occurred
std::basic_ios<CharT,Traits>) [edit] checks if an error has occurred (synonym of fail())
std::basic_ios<CharT,Traits>) [edit] checks if no error has occurred (synonym of !fail())
std::basic_ios<CharT,Traits>) [edit] returns state flags
std::basic_ios<CharT,Traits>) [edit] sets state flags
std::basic_ios<CharT,Traits>) [edit] modifies state flags
std::basic_ios<CharT,Traits>) [edit] Formatting copies formatting information
std::basic_ios<CharT,Traits>) [edit] manages the fill character
std::basic_ios<CharT,Traits>) [edit] Miscellaneous manages exception mask
std::basic_ios<CharT,Traits>) [edit] sets the locale
std::basic_ios<CharT,Traits>) [edit] manages associated stream buffer
std::basic_ios<CharT,Traits>) [edit] manages tied stream
std::basic_ios<CharT,Traits>) [edit] narrows characters
std::basic_ios<CharT,Traits>) [edit] widens characters
std::basic_ios<CharT,Traits>) [edit] Inherited from std::ios_base Member functions Formatting manages format flags
std::ios_base) [edit] sets specific format flag
std::ios_base) [edit] clears specific format flag
std::ios_base) [edit] manages decimal precision of floating point operations
std::ios_base) [edit] manages field width
std::ios_base) [edit] Locales sets locale
std::ios_base) [edit] returns current locale
std::ios_base) [edit] Internal extensible array returns a program-wide unique integer that is safe to use as index to pword() and iword()
std::ios_base) [edit] resizes the private storage if necessary and access to the long element at the given index
std::ios_base) [edit] resizes the private storage if necessary and access to the void* element at the given index
std::ios_base) [edit] Miscellaneous registers event callback function
std::ios_base) [edit] sets whether C++ and C I/O libraries are interoperable
std::ios_base) [edit] Member classes stream exception
std::ios_base) [edit] initializes standard stream objects
std::ios_base) [edit] Member types and constants Type Explanation stream open mode type
The following constants are also defined:
The following constants are also defined:
The following constants are also defined:
The following constants are also defined:
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