Struct Queue

go/chapter04/queue/queue.go:44–49

A go-routine safe FIFO (first in first out) data stucture.

//	A go-routine safe FIFO (first in first out) data stucture.
type Queue struct {
	head  *queuenode
	tail  *queuenode
	count int
	lock  *sync.Mutex
}

//	Creates a new pointer to a new queue.
func New() *Queue {