Perform a lexicographic three-way comparison of the specified lhs string and the specified rhs C-string by using CHAR_TRAITS::eq on each character; return the result of that comparison.
Declared in <bslstl_string.h>
template<
class CHAR_TYPE,
class CHAR_TRAITS,
class ALLOC>
bsl::String_ComparisonCategoryType<CHAR_TRAITS>
operator<=>(
basic_string<CHAR_TYPE, CHAR_TRAITS, ALLOC> const& lhs,
CHAR_TYPE const* rhs);