2019-08-25 08:57:53 +03:00
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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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2019-10-30 19:34:44 +03:00
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// For more tutorials : https://learngoprogramming.com
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// In-person training : https://www.linkedin.com/in/inancgumus/
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// Follow me on twitter: https://twitter.com/inancgumus
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2019-08-25 08:57:53 +03:00
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package main
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import (
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"fmt"
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"strconv"
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"time"
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)
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type book struct {
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title string
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price money
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published interface{}
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}
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func (b book) print() {
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p := format(b.published)
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fmt.Printf("%-15s: %s - (%v)\n", b.title, b.price.string(), p)
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}
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func format(v interface{}) string {
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var t int
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switch v := v.(type) {
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case int:
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// book{title: "moby dick", price: 10, published: 118281600},
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t = v
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case string:
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// book{title: "odyssey", price: 15, published: "733622400"},
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t, _ = strconv.Atoi(v)
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default:
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// book{title: "hobbit", price: 25},
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return "unknown"
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}
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// Mon Jan 2 15:04:05 -0700 MST 2006
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const layout = "2006/01"
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u := time.Unix(int64(t), 0)
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return u.Format(layout)
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}
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