35 lines
975 B
Go
35 lines
975 B
Go
// 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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// 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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package main
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import "fmt"
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func main() {
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var (
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mobydick = book{title: "moby dick", price: 10}
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minecraft = game{title: "minecraft", price: 20}
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tetris = game{title: "tetris", price: 5}
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rubik = puzzle{title: "rubik's cube", price: 5}
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)
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// thanks to the printer interface we can add different types of values
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// to the list.
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//
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// only rule: they need to implement the `printer` interface.
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// to do that: each type needs to have a print method.
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var store list
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store = append(store, &minecraft, &tetris, mobydick, rubik)
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store.print()
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// interface values are comparable
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fmt.Println(store[0] == &minecraft)
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fmt.Println(store[3] == rubik)
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}
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