course/Concurrency/channel.go

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2024-07-07 20:52:43 +08:00
package main
import (
"fmt"
"sync"
)
// 通道的声明
var c chan int //需要指定通道中元素的类型,引用类型,需要初始化
var wait sync.WaitGroup
func noBufferedChannel() {
c = make(chan int) //不带带缓冲区的通道初始化
wait.Add(1)
go func() {
defer wait.Done()
x := <-c //接受
fmt.Println("从通道C中取得值", x)
}()
c <- 10 //发送
wait.Wait()
}
func bufferedChannel() {
c = make(chan int, 1) //带缓冲区的初始化
c <- 10
fmt.Println("10发送到通道中了")
x := <-c
fmt.Println("从通道C中取到值", x)
c <- 20
fmt.Println("20发送到通道中了")
z := <-c
fmt.Println("从通道C中取到值", z)
close(c)
}
func main() {
bufferedChannel()
}