add: func exercises

25-functions/exercises/refactor-to-funcs-2/solution/games.go

@@ -0,0 +1,52 @@
+// 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
+
+import "fmt"
+
+type item struct {
+	id    int
+	name  string
+	price int
+}
+
+type game struct {
+	item
+	genre string
+}
+
+func load() (games []game) {
+	games = addGame(games, newGame(1, 50, "god of war", "action adventure"))
+	games = addGame(games, newGame(2, 40, "x-com 2", "strategy"))
+	games = addGame(games, newGame(3, 20, "minecraft", "sandbox"))
+	return
+}
+
+func addGame(games []game, g game) []game {
+	return append(games, g)
+}
+
+func newGame(id, price int, name, genre string) game {
+	return game{
+		item:  item{id: id, name: name, price: price},
+		genre: genre,
+	}
+}
+
+func indexByID(games []game) (byID map[int]game) {
+	byID = make(map[int]game)
+	for _, g := range games {
+		byID[g.id] = g
+	}
+	return
+}
+
+func printGame(g game) {
+	fmt.Printf("#%d: %-15q %-20s $%d\n",
+		g.id, g.name, "("+g.genre+")", g.price)
+}