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

after the function extracts str.max_size() elements, in which case the function calls
setstate(ios_base::failbit).
3.
If the function extracts no elements, it calls setstate(failbit). In any case, it returns
istr.
operator+
template<class Elem, class Tr, class Alloc>
basic_string<Elem, Tr, Alloc> operator+(
const basic_string<Elem, Tr, Alloc>& left,
const basic_string<Elem, Tr, Alloc>& right);
template<class Elem, class Tr, class Alloc>
basic_string<Elem, Tr, Alloc> operator+(
const basic_string<Elem, Tr, Alloc>& left,
const Elem *right);
template<class Elem, class Tr, class Alloc>
basic_string<Elem, Tr, Alloc> operator+(
const basic_string<Elem, Tr, Alloc>& left,
Elem right);
template<class Elem, class Tr, class Alloc>
basic_string<Elem, Tr, Alloc> operator+(
const Elem *left,
const basic_string<Elem, Tr, Alloc>& right);
template<class Elem, class Tr, class Alloc>
basic_string<Elem, Tr, Alloc> operator+(
Elem left,
const basic_string<Elem, Tr, Alloc>& right);
The functions each overload operator+ to concatenate two objects of template class
basic_string. All effectively return basic_string<Elem, Tr,
Alloc>(left).append(right).
operator!=
template<class Elem, class Tr, class Alloc>
bool operator!=(
const basic_string<Elem, Tr, Alloc>& left,
const basic_string<Elem, Tr, Alloc>& right);
template<class Elem, class Tr, class Alloc>
bool operator!=(
const basic_string<Elem, Tr, Alloc>& left,
const Elem *right);
template<class Elem, class Tr, class Alloc>
bool operator!=(