go关于channel一些问题
chydn 2016-11-16 11:19:16 本人学go语言新手,麻烦大神指点
package main
import "fmt"
func sum(a []int, c chan int) {
sum := 0
for _, v := range a {
sum += v
}
c <- sum // send sum to c
}
func main() {
a := []int{7, 2, 8, -9, 4, 0}
c := make(chan int)
go sum(a[:len(a)/2], c)
go sum(a[len(a)/2:], c)
x, y := <-c, <-c // receive from c
fmt.Println(x, y, x + y)
执行结果是:-5 17 12
go语言channel不是先进先出吗,为啥先打印x是-5而不是17?”