50 lines
954 B
Go
50 lines
954 B
Go
// Copyright © 2018 Inanc Gumus
|
|
// Learn Go Programming Course
|
|
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
|
|
//
|
|
// For more tutorials : https://learngoprogramming.com
|
|
// In-person training : https://www.linkedin.com/in/inancgumus/
|
|
// Follow me on twitter: https://twitter.com/inancgumus
|
|
|
|
package main
|
|
|
|
import "fmt"
|
|
|
|
type printer interface {
|
|
print()
|
|
}
|
|
|
|
type list []printer
|
|
|
|
func (l list) print() {
|
|
if len(l) == 0 {
|
|
fmt.Println("Sorry. We're waiting for delivery 🚚.")
|
|
return
|
|
}
|
|
|
|
for _, it := range l {
|
|
// fmt.Printf("(%-10T) --> ", it)
|
|
|
|
it.print()
|
|
|
|
// you cannot access to the discount method of the game type.
|
|
// `it` is a printer not a game.
|
|
// it.discount(.5)
|
|
}
|
|
}
|
|
|
|
// PREVIOUS CODE:
|
|
|
|
// type list []*game
|
|
|
|
// func (l list) print() {
|
|
// if len(l) == 0 {
|
|
// fmt.Println("Sorry. Our store is closed. We're waiting for the delivery 🚚.")
|
|
// return
|
|
// }
|
|
|
|
// for _, it := range l {
|
|
// it.print()
|
|
// }
|
|
// }
|