product.go 源码
// 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 product struct {
title string
price money
released timestamp
}
func (p *product) String() string {
return fmt.Sprintf("%s: %s (%s)", p.title, p.price, p.released)
}
func (p *product) discount(ratio float64) {
p.price *= money(1 - ratio)
}
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