refactor: marshaler unmarshaler iface

interfaces/12-marshaler/json.go

@@ -7,9 +7,7 @@
 
 package main
 
-import (
-	"encoding/json"
-)
+import "encoding/json"
 
 func encode() ([]byte, error) {
 	l := list{
@@ -17,13 +15,12 @@ func encode() ([]byte, error) {
 		{Title: "odyssey", Price: 15, Released: toTimestamp("733622400")},
 		{Title: "hobbit", Price: 25},
 	}
-
 	return json.MarshalIndent(l, "", "\t")
 }
 
-func decode(data []byte) (l list, err error) {
+func decode(data []byte) (l list, _ error) {
 	if err := json.Unmarshal(data, &l); err != nil {
 		return nil, err
 	}
-	return l, nil
+	return
 }