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authorRob Pike <r@golang.org>2008-07-15 20:52:07 -0700
committerRob Pike <r@golang.org>2008-07-15 20:52:07 -0700
commit33101926f9196bcf872ab5560543f30660d17e2d (patch)
tree79b8077b92aeb361c3e3fff67111ab50192a3d19 /test/sieve.go
parentf550cd67e0de68cc5a4757e05ccaf1498565bec9 (diff)
downloadgo-git-33101926f9196bcf872ab5560543f30660d17e2d.tar.gz
channel tests with new syntax
SVN=127436
Diffstat (limited to 'test/sieve.go')
-rw-r--r--test/sieve.go40
1 files changed, 20 insertions, 20 deletions
diff --git a/test/sieve.go b/test/sieve.go
index 365252260c..c55477caf3 100644
--- a/test/sieve.go
+++ b/test/sieve.go
@@ -7,34 +7,34 @@
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'.
- }
+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'.
- }
- }
+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 := new(chan int); // Create a new channel.
- go Generate(ch); // Start Generate() as a subprocess.
- for {
- prime := <ch;
- print prime, "\n";
- ch1 := new(chan int);
- go Filter(ch, ch1, prime);
- ch = ch1
- }
+ ch := new(chan int); // Create a new channel.
+ go Generate(ch); // Start Generate() as a subprocess.
+ for {
+ prime := <-ch;
+ print prime, "\n";
+ ch1 := new(chan int);
+ go Filter(ch, ch1, prime);
+ ch = ch1
+ }
}
func main() {