Create a string from the characters in the range starting at the specified first iterator and ending right before the specified last iterator of the (template parameter) type INPUT_ITER. Optionally specify a basicAllocator used to supply memory. If basicAllocator is not specified, a default-constructed allocator is used. The behavior is undefined unless first and last refer to a sequence of valid values where first is at a position at or before last.
Declared in <bslstl_string.h>
template<class INPUT_ITER>
basic_string(
INPUT_ITER first,
INPUT_ITER last,
allocator<char32_t> const& basicAllocator = ALLOCATOR());