41 #ifdef PB_DS_CLASS_C_DEC 44 inline typename PB_DS_CLASS_C_DEC::const_reference
48 PB_DS_ASSERT_VALID((*
this))
49 _GLIBCXX_DEBUG_ASSERT(!base_type::
empty());
50 return base_type::m_p_root->m_value;
constexpr auto empty(const _Container &__cont) noexcept(noexcept(__cont.empty())) -> decltype(__cont.empty())
Return whether a container is empty.