pb_ds/detail/basic_types.hpp

74       typedef typename mapped_type_allocator::const_reference const_mapped_reference;
81       typedef typename value_type_allocator::const_reference const_reference;
101       typedef typename mapped_type_allocator::const_reference const_mapped_reference;
108       typedef typename value_type_allocator::const_reference const_reference;
135       typedef typename mapped_type_allocator::const_reference const_mapped_reference;
143       typedef typename value_type_allocator::const_reference const_reference;
177       typedef typename mapped_type_allocator::const_reference const_mapped_reference;
185       typedef typename value_type_allocator::const_reference const_reference;