KeyedUpdatableQueue

KeyedUpdatableQueue

A KeyedUpdatableQueue is a refinement of the UpdatableQueue concept. It requires that models order the contained values by their keys, to which values are mapped via a read/write key map.

Notation

| Q | is a type that models KeyedUpdatableQueue. | | T | is the value type of Q. |

Members

For a type to model the KeyedUpdatableQueue concept it must have the following members in addition to the members that are required of types that model UpdatableQueue:

| Member | Description | | key_type | The type of keys that are associated with values | | key_map | The key property map type. This type must model Read/Write Property Map. | | key_map keys() const | Returns the key map |

Concept Checking Class

boost/graph/buffer_concepts.hpp

template <class Q>
  struct KeyedUpdatableQueueConcept
  {
    typedef typename Q::key_type key_type;
    typedef typename Q::key_map key_map;

    void constraints() {
      BOOST_CONCEPT_ASSERT(( UpdatableQueue<Q> ));
      BOOST_CONCEPT_ASSERT(( ReadWritePropertyMap< key_map, typename Buffer<Q>::value_type > ));
    }

    void const_constraints(const Q& cq) {
      km = cq.keys();
      k = get(km, g_ct);
    }

    static const typename Buffer<Q>::value_type g_ct;
    key_type k;
    key_map km;
    Q q;
  };

Models

• boost::d_ary_heap_indirect

| Copyright © 2010 | Daniel Trebbien ([email protected]) |