refactor: common ifaces

interfaces/09-little-refactor/main.go

@@ -0,0 +1,19 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+func main() {
+	l := list{
+		{title: "moby dick", price: 10, released: toTimestamp(118281600)},
+		{title: "odyssey", price: 15, released: toTimestamp("733622400")},
+		{title: "hobbit", price: 25},
+	}
+
+	l.discount(.5)
+	l.print()
+}