How to use

RecycleManager

in

org.ddogleg.struct

  @Override
  public T requestInstance() {
    T n = super.requestInstance();
    used.add(n);
    return n;
  }
}

/**
 * Either returns a recycled instance or a new one.
 */
public T requestInstance() {
  T a;
  if( unused.size() > 0 ) {
    a = unused.pop();
  } else {
    a = createInstance();
  }
  return a;
}

/**
 * Removes the edge from the two nodes and recycles the data structure
 */
void detachEdge(SquareEdge edge) {
  edge.a.edges[edge.sideA] = null;
  edge.b.edges[edge.sideB] = null;
  edge.distance = 0;
  edges.recycleInstance(edge);
}

@Test
public void requestInstance_recycleInstance() {
  RecycleManager<Dummy> manager = new RecycleManager<Dummy>(Dummy.class);
  Dummy first = manager.requestInstance();
  Dummy second = manager.requestInstance();
  manager.recycleInstance(first);
  Dummy third = manager.requestInstance();
  assertTrue(first==third);
  assertTrue(first!=second);
  assertEquals(0, manager.unused.size());
}

  @Override
  public T requestInstance() {
    T n = super.requestInstance();
    used.add(n);
    return n;
  }
}

/**
 * Either returns a recycled instance or a new one.
 */
public T requestInstance() {
  T a;
  if( unused.size() > 0 ) {
    a = unused.pop();
  } else {
    a = createInstance();
  }
  return a;
}

  /**
   * Creates a new edge which will connect the two nodes.  The side on each node which is connected
   * is specified by the indexes.
   * @param a First node
   * @param indexA side on node 'a'
   * @param b Second node
   * @param indexB side on node 'b'
   * @param distance distance apart the center of the two nodes
   */
  void connect( SquareNode a , int indexA , SquareNode b , int indexB , double distance ) {
    SquareEdge edge = edges.requestInstance();
    edge.reset();

    edge.a = a;
    edge.sideA = indexA;
    edge.b = b;
    edge.sideB = indexB;
    edge.distance = distance;

    a.edges[indexA] = edge;
    b.edges[indexB] = edge;
  }
}