Deduce the template parameter CHAR_TYPE from the value_type of the iterators passed to passed to the constructor of basic_string. Deduce the template parameter ALLOCATOR from the optional argument passed to the constructor. This deduction guide does not participate unless the specified ALLOCATOR meets the requirements of a standard allocator.
Declared in <bslstl_string.h>
template<
class INPUT_ITER,
class CHAR_TYPE = BloombergLP::bslstl::IteratorUtil::IterVal_t<INPUT_ITER>,
class ALLOCATOR = bsl::allocator<CHAR_TYPE>>
requires bsl::IsStdAllocator_v<ALLOCATOR>
basic_string<CHAR_TYPE, char_traits<CHAR_TYPE>, ALLOCATOR>(
INPUT_ITER,
INPUT_ITER,
ALLOCATOR) -> basic_string<CHAR_TYPE, char_traits<CHAR_TYPE>, ALLOCATOR>;