--- /dev/null
+// $G $D/$F.go && $L $F.$A && ./$A.out
+
+// 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.
+
+// This version generates up to 100 and checks the results.
+// With a channel, of course.
+
+package main
+
+// Send the sequence 2, 3, 4, ... to channel 'ch'.
+func Generate(ch *chan> int) {
+ for i := 2; i<100; 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(primes *chan> int) {
+ ch := new(chan int); // Create a new channel.
+ go Generate(ch); // Start Generate() as a subprocess.
+ for {
+ prime := <ch;
+ >primes = prime;
+ ch1 := new(chan int);
+ go Filter(ch, ch1, prime);
+ ch = ch1
+ }
+}
+
+func main() {
+ primes := new(chan int);
+ go Sieve(primes);
+ if <primes != 2 { panic 2 }
+ if <primes != 3 { panic 3 }
+ if <primes != 5 { panic 5 }
+ if <primes != 7 { panic 7 }
+ if <primes != 11 { panic 11 }
+ if <primes != 13 { panic 13 }
+ if <primes != 17 { panic 17 }
+ if <primes != 19 { panic 19 }
+ if <primes != 23 { panic 23 }
+ if <primes != 29 { panic 29 }
+ if <primes != 31 { panic 31 }
+ if <primes != 37 { panic 37 }
+ if <primes != 41 { panic 41 }
+ if <primes != 43 { panic 43 }
+ if <primes != 47 { panic 47 }
+ if <primes != 53 { panic 53 }
+ if <primes != 59 { panic 59 }
+ if <primes != 61 { panic 61 }
+ if <primes != 67 { panic 67 }
+ if <primes != 71 { panic 71 }
+ if <primes != 73 { panic 73 }
+ if <primes != 79 { panic 79 }
+ if <primes != 83 { panic 83 }
+ if <primes != 89 { panic 89 }
+ if <primes != 97 { panic 97 }
+ sys.exit(0);
+}
=========== ./nil.go
+=========== ./peano.go
+0! = 1
+1! = 1
+2! = 2
+3! = 6
+4! = 24
+5! = 120
+6! = 720
+7! = 5040
+8! = 40320
+9! = 362880
+10! = 3628800
+
=========== ./readfile.go
=========== ./sieve.go
-sieve.go:8: fatal error: walktype: switch 1 unknown op SEND l(212)
-BUG: known to fail incorrectly
=========== ./simassign.go
=========== ./turing.go
Hello World!
+=========== ./utf.go
+
=========== ken/for.go
=========== ken/interfun.go
=========== ken/strvar.go
+=========== chan/sieve.go
+
=========== bugs/bug010.go
bugs/bug010.go:13: error in shape across CALL
BUG: known to fail incorrectly