标签：也会 匿名函数 其它 for break new span class his
package main import ( "fmt" "time" ) func NewTask() { for true { fmt.Println("this is a newtesk goroutine") time.Sleep(time.Second) //延时1 } } func main() { //一定要写在下面的死循环之前 go NewTask()//使用go关键字新建一个协程 for true { fmt.Println("this is a main goroutine") time.Sleep(time.Second) //延时1 } //NewTask()//如果按照这里的写法，这个方法肯定不会被调用到的 }
执行的结果
this is a main goroutine this is a newtesk goroutine this is a newtesk goroutine this is a main goroutine this is a main goroutine this is a newtesk goroutine this is a main goroutine this is a newtesk goroutine this is a main goroutine this is a newtesk goroutine ///
这里有一点需要注意的是：在一个程序启动时，其主函数即在一个单独的goroutine中运行，我们叫它main goroutine,新的goroutine会用go语句来创建，当主协程(main goroutine)退出时，其它的子协程也会退出，验证一下
package main import ( "fmt" "time" ) func main() { go func() { i := 0 for true { i ++ fmt.Println(" 子协程 i = ", i) time.Sleep(time.Second) } }() i := 0 for true { i ++ fmt.Println(" 主协程 i = ", i) time.Sleep(time.Second) if i == 2{ break } } }
执行结果
主协程 i = 1 子协程 i = 1 主协程 i = 2 子协程 i = 2
被调用的匿名函数是无限循环，当主协程退出时，子协助就算是无限循环也退出了
标签：也会 匿名函数 其它 for break new span class his
原文地址：https://www.cnblogs.com/baylorqu/p/9670148.html
