main.go

package main

import (
	"./server"
	"./utils"
	"container/heap"
	"fmt"
	// "messenger/utils/u"
)

type Item struct {
	value    string
	priority int
	index    int
}

type PriorityQueue []*Item

func (pq PriorityQueue) Len() int {
	return len(pq)
}

func (pq PriorityQueue) Less(i, j int) bool {
	return pq[i].priority > pq[j].priority
}

func (pq PriorityQueue) Swap(i, j int) {
	pq[i], pq[j] = pq[j], pq[i]
	pq[i].index = i
	pq[j].index = j
}

// -------------- implement Push ------------
func (pq *PriorityQueue) Push(x interface{}) {
	n := len(*pq)
	item := x.(*Item)
	item.index = n
	*pq = append(*pq, item)
}

func (pq *PriorityQueue) Pop() interface{} {
	old := *pq
	n := len(old)
	item := old[n-1]
	item.index = -1
	*pq = old[0 : n-1]
	return item
}

// func (pq *PriorityQueue) update(item *Item, value string, priority int) {
// 	item.value = value
// 	item.priority = priority
// 	heap.Fix(pq, item.index)
// }

func main() {
	pq := make(PriorityQueue, 0)

	heap.Init(&pq)

	item := &Item{
		value:    "okk",
		priority: 6,
	}

	heap.Push(&pq, item)

	for pq.Len() > 0 {
		item := heap.Pop(&pq).(*Item)
		fmt.Printf("%.2d : %s", item.priority, item.value)
	}
	utils.Print()
	server.Start()
}