不要通过共享内存通信,要通过通信共享内存。
channel是golang并发编程中一种重要的数据结构,用于多个goroutine之间进行通信。
我们通常可以把channel想象成一个传送带,将goroutine想象成传送带周边的人,一个传送带的上游放上物品,通过传送带的传输,下游的人可以将物品取走。
package mainimport ("fmt""time"
)func main() {c := make(chan string, 2)s := []string{"A", "B", "C", "D"}go func() {defer close(c)for _, v := range s {fmt.Printf("send to chan %v\n", v)c <- vtime.Sleep(1 * time.Second)}}()time.Sleep(5 * time.Second)for v := range c {fmt.Printf("recieved %v\n", v)}
}
package mainimport ("fmt""time"
)func main() {c := make(chan string, 2)s := []string{"A", "B", "C", "D"}go func() {//defer close(c)for _, v := range s {fmt.Printf("send to chan %v\n", v)c <- vtime.Sleep(1 * time.Second)}}()time.Sleep(5 * time.Second)for v := range c {fmt.Printf("recieved %v\n", v)}
}