35 lines
835 B
Go
35 lines
835 B
Go
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// 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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type game struct {
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title string
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price float64
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}
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func (g *game) print() {
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fmt.Printf("%-15s: $%.2f\n", g.title, g.price)
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}
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// + discount gets a copy of `*game`.
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// + discount can update the original `game` through the game pointer.
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// + it's better to use the same receiver type: `*game` for all methods.
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func (g *game) discount(ratio float64) {
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g.price *= (1 - ratio)
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}
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// PREVIOUS CODE:
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// ----------------------------------------------------------------------------
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// + `g` is a copy: `discount` cannot change the original `g`.
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// func (g game) discount(ratio float64) {
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// g.price *= (1 - ratio)
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// }
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