learngo/interfaces/08-composition/main.go

// 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"
	"sort"
)

func main() {
	store := list{
		&book{&product{"moby dick", 10}, 118281600},
		&book{&product{"odyssey", 15}, "733622400"},
		&book{&product{"hobbit", 25}, nil},
		&puzzle{&product{"rubik's cube", 5}},
		&game{&product{"minecraft", 20}},
		&game{&product{"tetris", 5}},
		&toy{&product{"yoda", 150}},
	}

	books := store[:3]
	others := store[3:]

	books.discount(.5)
	fmt.Printf("%s\n", store)

	sort.Sort(byPrice(others))
	fmt.Printf("\n%s\n", store)

	store = list{books, others}
	fmt.Printf("\n%s\n", store)

	// store.discount(.5)
	// // sort.Sort(sort.Reverse(byPrice(store)))
	// sort.Sort(byName(store))
	// fmt.Println(store)
}