Fix

shadirconcurrent/main.go

@@ -29,8 +29,7 @@ func main() {
 
 	for i := 0; i < 100; i++ {
 		go func() {
-			for {
-				path := <-chan_path
+			for path := range chan_path {
 				if h, err := sha256File(path); err != nil {
 					wg.Done()
 					log.Print("Error "+path, err)
@@ -42,14 +41,14 @@ func main() {
 	}
 
 	go func() {
-		for {
-			fmt.Println(<-chan_hash)
+		for h := range chan_hash {
+			fmt.Println(h)
 			wg.Done()
 		}
 	}()
 
 	err := filepath.Walk(os.Args[1], func(path string, info os.FileInfo, err error) error {
-		if err != nil && !info.IsDir() {
+		if err == nil && !info.IsDir() {
 			wg.Add(1)
 			chan_path <- path
 		}