In Go, the traditional while true loop, found in many programming languages, can done through the for keyword. Below are two alternative versions, a for can work as an infinite loop without any parameters, or with a true boolean. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18...
下面的代码,当a=3时,会跳出for循环,直接执行LOOP所在行的代码: package mainimport "fmt"func main() {for a := 1; a < 5; a++ {if a == 3 { //a等于3;执行goto跳出goto LOOP}//a=3时不会执行打印操作fmt.Printf("a 的值为 : %d\n", a)}LOOP:fmt.Printf("a等于3;执行goto跳出!")} ...
func main() {fori := 1; i <= 10; i++{ifi > 5{break//loopisterminatedifi > 5} fmt.Printf("%d", i) } fmt.Printf("\nline after for loop") } 在上面的程序中,在循环过程中 i 的值会被判断。如果 i 的值大于 5 然后break语句就会执行,循环就会被终止。打印语句会在for循环结束后执行,...
loop = asyncio.get_event_loop() loop.run_until_complete(main()) # 处理一个任务 # loop.run_until_complete(asyncio.wait([main()])) # 处理多个任务 # task = loop.create_task(main()) # 使用create_task获取返回值 # loop.run_until_complete(task) # loop.run_until_complete(asyncio.wait([...
loop { tokio::time::sleep(t).await; if NUM > 1000 { println!("大于"); } } } #[tokio::main] async fn main() { let mut i = 0; while i < 10000 { tokio::task::spawn(fff()); i = i + 1; } println!("over");
// a traditional "while" loop for condition { // ... } 如果连condition也省略了,像下面这样: // a traditional infinite loop for { // ... } 这就变成一个无限循环,尽管如此,还可以用其他方式终止循环, 如一条break或return语句。 for循环的另一种形式, 在某种数据类型的区间(range)上遍历,如字符...
在continue语句后添加标签时,表示开始标签对应的循环。例如: func continueDemo() { forloop1: for i := 0; i < 5; i++ { // forloop2: for j := 0; j < 5; j++ { if i == 2 && j == 2 { continue forloop1 } fmt.Printf("%v-%v\n", i, j) } } }...
While loop using for loop We discussed earlier thatforloop is the only looping statement available in Go. It’s possible to use a variation of the for loop to achieve the functionality of awhileloop. Let’s discuss how this can be done. The program below prints all even numbers from 0 ...
break loop } } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. continue 同上,可加label 代码 loop2: for i:=0;i<len(arr);i++{ for j:=0;j<len(arr[0]);j++{ fmt.Println(arr[i][j]) if arr[i][j] == 1{ continue loop2 ...
asyncio.get_event_loop().run_forever() async/await支持的原生协程: class RcOutputHandler(BaseHandler): async def post(self): status, msg, user = self.check_args('uid', 'order_no', 'mid', 'phone', 'name', 'apply_id', 'product_id') ...