main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
import (
"fmt"
"strings"
)
func main() {
books := [...]string{"Kafka's Revenge", "Stay Golden", "Everythingship"}
upper, lower := books, books
for i := range books {
upper[i] = strings.ToUpper(upper[i])
lower[i] = strings.ToLower(lower[i])
}
fmt.Printf("books: %q\n", books)
fmt.Printf("upper: %q\n", upper)
fmt.Printf("lower: %q\n", lower)
}
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