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 (
"bufio"
"fmt"
"os"
"regexp"
"strings"
)
func main() {
args := os.Args[1:]
if len(args) != 1 {
fmt.Println("Please type a search word.")
return
}
query := args[0]
rx := regexp.MustCompile(`[^a-z]+`)
in := bufio.NewScanner(os.Stdin)
in.Split(bufio.ScanWords)
words := make(map[string]bool)
for in.Scan() {
word := strings.ToLower(in.Text())
word = rx.ReplaceAllString(word, "")
if len(word) > 2 {
words[word] = true
}
}
// for word := range words {
// fmt.Println(word)
// }
if words[query] {
fmt.Printf("The input contains %q.\n", query)
return
}
fmt.Printf("Sorry. The input does not contain %q.\n", query)
// query := "sun"
// fmt.Println("sun:", words["sun"], "tesla:", words["tesla"])
// unnecessary
// if _, ok := words[query]; ok {
// fmt.Printf("The input contains %q.\n", query)
// return
// }
// fmt.Printf("Sorry. The input does not contain %q.\n", query)
}
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