diff options
Diffstat (limited to 'doc/progs/sieve.go')
| -rw-r--r-- | doc/progs/sieve.go | 38 | 
1 files changed, 0 insertions, 38 deletions
| diff --git a/doc/progs/sieve.go b/doc/progs/sieve.go deleted file mode 100644 index c7c3e7812..000000000 --- a/doc/progs/sieve.go +++ /dev/null @@ -1,38 +0,0 @@ -// Copyright 2009 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -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, out chan int, prime int) { -	for { -		i := <-in  // Receive value of new variable 'i' from 'in'. -		if i % prime != 0 { -			out <- i  // Send 'i' to channel 'out'. -		} -	} -} - -// The prime sieve: Daisy-chain filter processes together. -func main() { -	ch := make(chan int)  // Create a new channel. -	go generate(ch)  // Start generate() as a goroutine. -	for i := 0; i < 100; i++ { // Print the first hundred primes. -		prime := <-ch -		fmt.Println(prime) -		ch1 := make(chan int) -		go filter(ch, ch1, prime) -		ch = ch1 -	} -} | 
