34 lines
812 B
Go
34 lines
812 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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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}, unknown},
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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 store doesn't have a print method anymore.
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// but the Print function can print it.
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// it's because, the list satisfies the stringer.
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fmt.Print(store)
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// timestamp is useful even if it's zero.
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var ts timestamp
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fmt.Println(ts)
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}
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