fifo_queue.Queue is a simple FIFO queue. It supports pushing an item at
the end, and popping an item from the front. It is implemented as a
single-linked list of arrays of items.

INSTALLATION

    go get github.com/yasushi-saito/fifo_queue

EXAMPLE:

    import "github.com/yasushi-saito/fifo_queue"
    q := fifo_queue.NewQueue()
    q.PushBack("foo")
    q.PushBack("bar")
    item := q.PopFront().(string)  // "foo"
    item = q.PopFront().(string)   // "bar"

TYPES

type Item interface{}

type Queue struct {
    // contains filtered or unexported fields
}

func NewQueue() *Queue
    Create a new empty FIFO queue

func (q *Queue) Len() int
    Return the number of items in the queue

func (q *Queue) PopFront() Item
    Remove the item at the head of the queue and return it.

    REQUIRES: q.Len() > 0

func (q *Queue) PushBack(item Item)
    Add an item to the end of the queue