关于golang:多协程累加读写尚硅谷GO语言

注解啥的都写外面了，大家有不懂的能够问我

package mainimport (    "fmt")//定义计算的数值大小var numMax int = 20000// 定义开启 read 协程的数量var readMax int = 8// 存储定义的数值1，2，3，4，5........20000var numchan chan int = make(chan int, numMax)// 存储计算结果var reschan chan int = make(chan int, numMax)// 存储协程执行结束后返回的个数var endchan chan bool = make(chan bool, readMax)func main() {    go writeNum()    go readNum()    go readNum()    go readNum()    go readNum()    go readNum()    go readNum()    go readNum()    go readNum()    for {        // 继续循环，判断完结信息是否都被增加        if len(endchan) == readMax {            close(reschan)            break        }    }    // 循环遍历    index := 1    for x := range reschan {        fmt.Printf("res[%d] = %d", index, x)        fmt.Println()        index++    }}// 写入数据func writeNum() {    for i := 1; i <= numMax; i++ {        numchan <- i    }    close(numchan)}// 读取数据func readNum() {    // 继续循环计算    for {        if len(numchan) > 0 {            number := <-numchan            sum := 0            for i := 1; i <= number; i++ {                sum += i            }            reschan <- sum            continue        }        //如果 reschan 的数据都被增加结束        if len(reschan) == numMax {            // 增加完结信息            endchan <- true            //完结            break        }    }}