Function template lt

Function template lt_fields

pfr::lt_fields

// In header: <pfr/ops_fields.hpp>


template<typename T, typename U> 
  constexpr bool lt_fields(const T & lhs, const U & rhs);

Does a field-by-field less comparison.

Returns:

L < R || (L == R && tuple_size_v<T> < tuple_size_v<U>), where L and R are the results of calling std::tie on first N fields of lhs and