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Diffstat (limited to 'test/sieve.go')
-rw-r--r-- | test/sieve.go | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/test/sieve.go b/test/sieve.go deleted file mode 100644 index 4fa111582..000000000 --- a/test/sieve.go +++ /dev/null @@ -1,42 +0,0 @@ -// $G $F.go && $L $F.$A # don't run it - goes forever - -// 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 - -// 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 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 Sieve() { - ch := make(chan int) // Create a new channel. - go Generate(ch) // Start Generate() as a subprocess. - for { - prime := <-ch - print(prime, "\n") - ch1 := make(chan int) - go Filter(ch, ch1, prime) - ch = ch1 - } -} - -func main() { - Sieve() -} |