34 lines
562 B
Go
34 lines
562 B
Go
// For more tutorials: https://blog.learngoprogramming.com
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//
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// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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package main
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import (
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"fmt"
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"strings"
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)
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type list []*product
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func (l list) String() string {
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if len(l) == 0 {
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return "Sorry. We're waiting for delivery 🚚.\n"
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}
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var str strings.Builder
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for _, p := range l {
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fmt.Fprintf(&str, "* %s\n", p)
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}
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return str.String()
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}
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func (l list) discount(ratio float64) {
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for _, p := range l {
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p.discount(ratio)
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}
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}
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