英文:
How to read a word in upper and lower case from file? Go
问题
我有一个任务，需要读取一个文件，然后扫描是否包含"不良词汇"，最后输出文件中是否包含"不良词汇"的结果，如果包含则输出"True"，否则输出"False"。
我写了这个函数：
func readFile(fileName string, tabooName string) {
dataFile, err := os.Open(fileName)
if err != nil {
log.Fatal(err)
}
defer dataFile.Close()
scanner := bufio.NewScanner(dataFile)
for scanner.Scan() {
scanner.Text()
if strings.Contains(scanner.Text(), strings.ToLower(tabooName)) || strings.Contains(scanner.Text(), strings.ToUpper(tabooName)) {
fmt.Println("True")
break
} else {
fmt.Println("False")
break
}
}
if err := scanner.Err(); err != nil {
log.Fatal(err)
}
}
但是，如果"不良词汇"以大写形式写入，它无法正常工作。例如：
测试 #2 中的错误答案
这个词属于不良词汇
请查看您的程序在此失败测试期间的输出。
注意，">" 字符表示输入行的开头。
---
forbidden_words.txt
HARSH
False
我应该如何正确处理这个问题？
更新：我不知道为什么，但这个函数现在可以正常工作了...
首先，我只是将整个函数写在了main函数中，它可以工作，现在将函数封装成了func，它也可以工作。我不知道为什么，哈哈。
英文:
I have a task to read a file and, then scan for "bad word", and finally output "True" or "False" if "bad word" contains in file or not.
I wrote this function:
func readFile(fileName string, tabooName string) {
dataFile, err := os.Open(fileName)
if err != nil {
log.Fatal(err)
}
defer dataFile.Close()
scanner := bufio.NewScanner(dataFile)
for scanner.Scan() {
scanner.Text()
if strings.Contains(scanner.Text(), strings.ToLower(tabooName)) || strings.Contains(scanner.Text(), strings.ToUpper(tabooName)) {
fmt.Println("True")
break
} else {
fmt.Println("False")
break
}
}
if err := scanner.Err(); err != nil {
log.Fatal(err)
}
}
But it does not work if the "bad word" is written in UPPERCASE
For example:
Wrong answer in test #2
This word belongs to bad words
Please find below the output of your program during this failed test.
Note that the '>' character indicates the beginning of the input line.
---
forbidden_words.txt
HARSH
False
How can i do it corectly?
UPDATE: I don't know why but this function is working now...
First, i justed wrote this whole func in main function, and it's working, now with func it's working too. I don't know why lol
答案1
得分: 1
你可以稍微不同地使用strings.Contains和strings.ToLower：
func readFile(fileName string, tabooName string) {
file, err := os.Open(fileName)
if err != nil {
log.Fatal(err)
}
defer file.Close()
tabooNameLowered := strings.ToLower(tabooName)
scanner := bufio.NewScanner(file)
for scanner.Scan() {
loweredLine := strings.ToLower(scanner.Text())
if strings.Contains(loweredLine, tabooNameLowered) {
fmt.Println("True")
return
}
}
fmt.Println("False")
if err := scanner.Err(); err != nil {
log.Fatal(err)
}
}
英文:
You could use <code>strings.<b>Contains</b></code> and <code>strings.<b>ToLower</b></code> slightly differently:
func readFile(fileName string, tabooName string) {
file, err := os.Open(fileName)
if err != nil {
log.Fatal(err)
}
defer file.Close()
tabooNameLowered := strings.ToLower(tabooName)
scanner := bufio.NewScanner(file)
for scanner.Scan() {
loweredLine := strings.ToLower(scanner.Text())
if strings.Contains(loweredLine, tabooNameLowered) {
fmt.Println("True")
return
}
}
fmt.Println("False")
if err := scanner.Err(); err != nil {
log.Fatal(err)
}
}
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论