blob: 661a15383514fcd718871ceebbd765274e95430c [file] [log] [blame]
// +build ignore,OMIT
package main
import "fmt"
// prime returns true if n is a prime number.
func prime(n int) bool {
for i := 2; i < n; i++ {
if n%i == 0 {
return false
}
}
return true
}
// primes returns a channel of ints on which it writes the first n prime
// numbers before closing it.
func primes(n int) chan int {
c := make(chan int)
go func() {
for i := 1; n > 0; i++ {
if prime(i) {
c <- i
n--
}
}
close(c)
}()
return c
}
func main() {
for p := range primes(10) {
fmt.Println(p)
}
}