//test/chan/goroutines.go
package main
import (
"os"
"strconv"
)
func f(left, right chan int) {
left <- <-right
}
func main() {
var n = 10000
if len(os.Args) > 1 {
var err error
n, err = strconv.Atoi(os.Args[1])
if err != nil {
print("bad arg\n")
os.Exit(1)
}
}
leftmost := make(chan int)
right := leftmost
left := leftmost
for i := 0; i < n; i++ {
right = make(chan int)
go f(left, right)
left = right
}
go func(c chan int) { c <- 1 }(right)
<-leftmost
}
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