Method Push

internal/mapper/mapper.path.go:72–76

(x interface{})

	pq[j].index = j
}
func (pq *priorityQueue) Push(x interface{}) {
	n := x.(*nodeRecord)
	n.index = len(*pq)
	*pq = append(*pq, n)
}
func (pq *priorityQueue) Pop() interface{} {
	old := *pq
	n := old[len(old)-1]