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