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tr1.go
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/
tr1.go
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package main
import (
"fmt"
"github.com/hangshiisi/stringutil"
"time"
)
var c chan int
func ready(w string, sec int) {
time.Sleep(time.Duration(sec) * time.Second)
fmt.Println(w, "is ready!")
}
func readyTwo(w string, sec int) {
time.Sleep(time.Duration(sec) * time.Second)
fmt.Println(w, "is ready!")
c <- 1
}
func mainFirst() {
fmt.Println(stringutil.Reverse("!oG ,olleH"))
go ready("Tea", 2)
go ready("Coffee", 1)
fmt.Println("I am waiting")
time.Sleep(5 * time.Second)
}
func mainSecond() {
fmt.Println(stringutil.Reverse("!oG ,olleH"))
c = make(chan int)
go readyTwo("Tea", 2)
go readyTwo("Coffee", 1)
fmt.Println("I am waiting, but not too long")
//time.Sleep(5 * time.Second)
<-c
<-c
}
func secondMain() {
fmt.Println(stringutil.Reverse("!oG ,olleH"))
// time.Sleep(5 * time.Second)
// OldMain()
}
func main() {
secondMain()
}