Status channel in Grow()

grow/cli/main.go

@@ -6,6 +6,7 @@ import "math/rand"
 import "os"
 import "time"
 
+import "github.com/firestuff/subcoding/asm"
 import "github.com/firestuff/subcoding/grow"
 
 func main() {
@@ -28,8 +29,31 @@ func main() {
 		log.Fatal(err)
 	}
 
-	_, err = def.Grow()
-	if err != nil {
-		log.Fatal(err)
+	statusChan := make(chan grow.Status)
+
+	go func() {
+		_, err = def.Grow(statusChan)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}()
+
+	for {
+		status, ok := <-statusChan
+
+		if !ok {
+			break
+		}
+
+		if status.BestProgram == nil {
+			continue
+		}
+
+		src, err := asm.Disassemble(status.BestProgram)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		log.Printf("New best score %d / %d (after %d attempts):\n%s", status.BestScore, status.TargetScore, status.Attempts, src)
 	}
 }