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selectgreet.go
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/
selectgreet.go
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package main
import (
"fmt"
"math/rand"
"time"
)
func Greet(msg string) <-chan string {
c := make(chan string)
go func() {
for i := 0; ; i++ {
c <- fmt.Sprintf("%s: %d", msg, i)
time.Sleep(time.Duration(rand.Intn(1e3)) * time.Millisecond)
}
}()
return c
}
func FanIn(input1, input2 <-chan string) <-chan string {
c := make(chan string)
go func() {
for {
select {
case s := <-input1:
c <- s
case s := <-input2:
c <- s
}
time.Sleep(time.Duration(rand.Intn(1e3)) * time.Millisecond)
}
}()
return c
}
func main() {
c := FanIn(Greet("Adam"), Greet("Eve"))
for i := 0; i < 10; i++ {
fmt.Println(<-c)
}
fmt.Println("You are boring: I am leaving.")
}