下面的脚本是根据实际工作的环境，为了操作简便而写的，主要是select<em>循环</em>的用法，和大家分享一下。#!/bin/bash#Used for logining logserver quickly!#Written on xxxx.#Author：Levin.HAHA3='Choose which host you want to login:'echoiplist=...
有两种方式可以实现条件<em>循环</em>
一、for 变量 in 开始数值...结束数值 loop end loop；
二、while 条件 loop end loop；
loop的使用方式：
一、X := 100;
LOOP
X := X + 10;
IF X > 1000 THEN
EXIT;
END ...
Consider this playground
messages := make(chan int, 1)
done := make(chan bool)
go func() {
for {
select {
case msg := <- messages:
fmt.Println("receiver one", msg)
case signal := <-done :
fmt.Println(signal)
return
default:
fmt.Println("no message received")
}
}
}()
go func() {
for {
select {
case msg := <- messages:
fmt.Println("receiver two", msg)
case signal := <-done :
fmt.Println(signal)
return
default:
fmt.Println("no message received")
}
}
}()
go func() {
for i := 0; i < 2; i++ {
messages<-i
}
done<-true
done<-true
done<-true
}()
<-done
I am trying to simulate communicate from one thread to two other thread, but it seems like the above code is running fine in my local but not in playground.
Is there a trick to make the program work?
<em>执行</em>以下代码，发现无法跳出for<em>循环</em>：
func SelectTest() {
i := 0
for {
select {
case &lt;-time.After(time.Second * time.Duration(2)):
i++
if i == 5 {
fmt.Println("跳出for<em>循环</em>")
}
}
fmt.Println("for...
declare
num number := 1;
sql_tem Varchar2(100);
begin
while num <= 10
loop
for v_rlt in ( <em>SELECT</em> b. SID, b.serial# FROM v$process A, v$session b, v$sqlarea c WHERE A .addr = b.paddr A...
近日闲来无事，总有一种无形的力量萦绕在朕身边，让朕精神涣散，昏昏欲睡。
可是，像朕这么有职业操守的社畜怎么能在上班期间睡瞌睡呢，我不禁陷入了沉思。。。。
突然旁边的IOS同事问：‘嘿，兄弟，我发现一个网站的图片很有意思啊，能不能帮我保存下来提升我的开发灵感？’
作为一个坚强的社畜怎么能说自己不行呢，当时朕就不假思索的答应：‘oh， It’s simple. Wait for me for a ...
