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Go语言interface的value.(type)使用小技巧,
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<pre name="code" class="plain">package main
import (
"container/list"
"fmt"
"math/rand"
"sync"
"time"
)
type INFO struct {
lock sync.Mutex
Name string
Time int64
}
var List *list.List = list.New()
func main() {
var Info INFO
go func() {
for i := 0; i < 5; i++ {
time.Sleep(time.Duration(1e9 * int64(rand.Intn(5))))
Info.lock.Lock()
Info.Name = fmt.Sprint("Name",i)
Info.Time = time.Now().Unix() + 3
Info.lock.Unlock()
List.PushBack(Info)
}
}()
go Getgoods()
select {}
}
func Getgoods() {
for {
time.Sleep(1e8)
for List.Len() > 0 {
N,T := List.Remove(List.Front()).(INFO).name()
now := time.Now().Unix()
if T-now <= 0 {
fmt.Println(N,T,now)
continue
}
time.Sleep(time.Duration((T - now) * 1e9))
fmt.Println(N,now)
}
}
}
func (i INFO) name() (string,int64) {
return i.Name,i.Time
}
原文链接:https://www.f2er.com/go/190322.html