package main
import (
"fmt"
"time"
)
func main() {
a := make(chan bool)
b := make(chan bool)
go func(isRun chan bool) {
time.Sleep(time.Second * 10)
isRun <- true
}(a)
go func(isRun chan bool) {
time.Sleep(time.Second * 5)
isRun <- true
}(b)
select {
case <-a:
fmt.Println("run a")
case <-b:
fmt.Println("run b")
}
}
1.select与switch很像
2.select一般和通道使用
3.select会判断所有的case，哪个case最先出结果就执行哪个
4.一样快，谁先检测到就执行谁
