Standard C++ Library Reference ISO/IEC (VERSION3)

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<sstream>
Include the iostreams standard header <sstream> to define several template classes that
support iostreams operations on sequences stored in an allocated array object. Such sequences
are easily converted to and from objects of template class basic_string.
namespace std {
template<class Elem,
class Tr = char_traits<Elem>,
class Alloc = allocator<Elem> >
class basic_stringbuf;
typedef basic_stringbuf<char> stringbuf;
typedef basic_stringbuf<wchar_t> wstringbuf;
template<class Elem,
class Tr = char_traits<Elem>,
class Alloc = allocator<Elem> >
class basic_istringstream;
typedef basic_istringstream<char> istringstream;
typedef basic_istringstream<wchar_t> wistringstream;
template<class Elem,
class Tr = char_traits<Elem>,
class Alloc = allocator<Elem> >
class basic_ostringstream;
typedef basic_ostringstream<char> ostringstream;
typedef basic_ostringstream<wchar_t> wostringstream;
template<class Elem,
class Tr = char_traits<Elem>,
class Alloc = allocator<Elem> >
class basic_stringstream;
typedef basic_stringstream<char> stringstream;
typedef basic_stringstream<wchar_t> wstringstream;
};
basic_stringbuf
template <class Elem,
class Tr = char_traits<Elem>,
class Alloc = allocator<Elem> >