39 lines
1021 B
Go
39 lines
1021 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 "fmt"
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func main() {
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// The money type is a stringer.
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// You don't need to call the String method when printing a value of it.
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// var pocket money = 10
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// fmt.Println(pocket)
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store := list{
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&book{product{"moby dick", 10}, toTimestamp(118281600)},
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&book{product{"odyssey", 15}, toTimestamp("733622400")},
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&book{product{"hobbit", 25}, toTimestamp(nil)},
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&puzzle{product{"rubik's cube", 5}},
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&game{product{"minecraft", 20}},
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&game{product{"tetris", 5}},
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&toy{product{"yoda", 150}},
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}
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store.discount(.5)
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// The list is a stringer.
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// The `fmt.Print` function can print the `store`
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// by calling `store`'s `String()` method.
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//
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// Underneath, `fmt.Print` uses a type switch to
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// detect whether a type is a Stringer:
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// https://golang.org/src/fmt/print.go#L627
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fmt.Print(store)
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}
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