英文:
bufio.NewReader always creates a new line :/
问题
我使用这个来收集输入并显示输入，但是当我这样做时，"something"文本将显示在新的一行，但我希望文本在同一行显示，有什么想法吗？
func main() {
fmt.Println("Example")
print("example: ")
in := bufio.NewReader(os.Stdin)
input, err := in.ReadString('\n')
if err != nil {
fmt.Println("Error: ", err)
}
fmt.Print(input, "something")
}
英文:
I use this, to collect a input and display the input then, but when I do it like this the "something" text will be displayed in a new line, but I want the text to be displayed in the same line, any ideas?
func main() {
fmt.Println("Example")
print("example: ")
in := bufio.NewReader(os.Stdin);
input, err := in.ReadString('\n');
if err != nil {
fmt.Println("Error: ", err)
}
fmt.Println(input, "something")
}
答案1
得分: 3
从input中删除换行符。例如，
package main
import (
"bufio"
"fmt"
"os"
"strings"
)
func main() {
fmt.Println("Example")
print("example: ")
in := bufio.NewReader(os.Stdin)
input, err := in.ReadString('\n')
if err != nil {
fmt.Println("Error: ", err)
return
}
fmt.Println(strings.TrimRight(input, "\n"), "something")
}
输入/输出：
Example
example: some input
some input something
英文:
Trim the newline from input. For example,
package main
import (
"bufio"
"fmt"
"os"
"strings"
)
func main() {
fmt.Println("Example")
print("example: ")
in := bufio.NewReader(os.Stdin)
input, err := in.ReadString('\n')
if err != nil {
fmt.Println("Error: ", err)
return
}
fmt.Println(strings.TrimRight(input, "\n"), "something")
}
Input/Output:
Example
example: some input
some input something
答案2
得分: 2
fmt.Println()自动在输出的末尾添加换行符。
你可以尝试使用Printf，它接受一个“格式字符串”和一系列的输入。
一个例子如下：
func main() {
fmt.Println("Example")
print("example: ")
in := bufio.NewReader(os.Stdin);
input, err := in.ReadString('\n');
if err != nil {
fmt.Println("Error: ", err)
}
fmt.Printf("something : %s", input)
}
在这个例子中，%s是一个字符串类型的占位符。
所有的占位符可以在fmt godoc中找到：http://golang.org/pkg/fmt/
另外，如果输入本身在末尾有一个换行符，你可以使用strings包中的Trim函数来去掉\n字符。
英文:
fmt.Println() automatically appends a newline to the end of it's output.
You could try using Printf, which takes a "format string" and a list of inputs.
An example would be:
func main() {
fmt.Println("Example")
print("example: ")
in := bufio.NewReader(os.Stdin);
input, err := in.ReadString('\n');
if err != nil {
fmt.Println("Error: ", err)
}
fmt.Printf("something : %s", input)
}
In this case, %s is a placeholder for a string type.
All the placeholders can be found in the fmt godoc: http://golang.org/pkg/fmt/
Also if the input itself has a newline at the end, you can use Trim from the package strings to pull off the \n character.
答案3
得分: 1
在Windows上（不确定是否相关），之前的答案都对我没用。所以这里是我在https://groups.google.com/d/msg/golang-nuts/hWoESdeZ398/qDbTogJhj88J找到的解决方法，该链接指向https://play.golang.org/p/_9N_RwmBvd
基本思路是，不要使用strings.TrimRight(input, "\n")，而是包含一个\r字符，像这样strings.TrimRight(input, "\r\n")。
这样可以解决OP的问题。
修复输入剥离的OP代码！
func main() {
fmt.Println("Example")
print("example: ")
in := bufio.NewReader(os.Stdin);
input, err := in.ReadString('\n');
if err != nil {
fmt.Println("Error: ", err)
}
fmt.Println(strings.TrimRight(input, "\r\n"), "something")
}
PS：对不起，我只是希望能帮助别人节省20分钟的谷歌搜索时间！
英文:
On windows (not sure if that is relevant) none of the previous answers worked for me. So here's the resolution I found on: https://groups.google.com/d/msg/golang-nuts/hWoESdeZ398/qDbTogJhj88J which links to https://play.golang.org/p/_9N_RwmBvd
The basic idea is that rather than using strings.TrimRight(input, "\n") you would include a \r character, like strings.TrimRight(input, "\r\n")
This fixes the OPs issue.
OP code with fixed input stripping!
func main() {
fmt.Println("Example")
print("example: ")
in := bufio.NewReader(os.Stdin);
input, err := in.ReadString('\n');
if err != nil {
fmt.Println("Error: ", err)
}
fmt.Println(strings.TrimRight(input, "\r\n"), "something")
}
PS: Sorry for the necro I'm just hoping to save someone from wasting 20 minutes googling!
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