diff options
Diffstat (limited to 'doc/play/sieve.go')
-rw-r--r-- | doc/play/sieve.go | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/doc/play/sieve.go b/doc/play/sieve.go deleted file mode 100644 index 519093453f..0000000000 --- a/doc/play/sieve.go +++ /dev/null @@ -1,36 +0,0 @@ -// A concurrent prime sieve - -package main - -import "fmt" - -// Send the sequence 2, 3, 4, ... to channel 'ch'. -func Generate(ch chan<- int) { - for i := 2; ; i++ { - ch <- i // Send 'i' to channel 'ch'. - } -} - -// Copy the values from channel 'in' to channel 'out', -// removing those divisible by 'prime'. -func Filter(in <-chan int, out chan<- int, prime int) { - for { - i := <-in // Receive value from 'in'. - if i%prime != 0 { - out <- i // Send 'i' to 'out'. - } - } -} - -// The prime sieve: Daisy-chain Filter processes. -func main() { - ch := make(chan int) // Create a new channel. - go Generate(ch) // Launch Generate goroutine. - for i := 0; i < 10; i++ { - prime := <-ch - fmt.Println(prime) - ch1 := make(chan int) - go Filter(ch, ch1, prime) - ch = ch1 - } -} |