String format truncating value

Question

This is going to be a simple question to answer, I am sure of it. I am brand new to Go and I can't figure out what is happening.

package main

import (
    "fmt"
    "bufio"
    "os"
    "strings"
)

func main() {
    fmt.Print("*A basic GoLang/Native example*\n\n")
    fmt.Print("Enter your name:\n")

    reader := bufio.NewReader(os.Stdin)
    name, _ := reader.ReadString('\n')
    name = strings.TrimSuffix(name, "\n")

    fmt.Printf("Hello, %s, how are you?", name)

    reader.ReadString('\n')

}

I am removing the newline which is stored in variable name from reading in the user input, but the last Printf statement is truncating Hello, from the line.

Community · Accepted Answer · 2020-06-20 09:12:55Z

2

I think you are looking for strings.TrimSpace.

To remove the leading and trailing white spaces use this.

Change this line from

name = strings.TrimSuffix(name, "\n")

to

name = strings.TrimSpace(name)

Output:

*A basic GoLang/Native example*

Enter your name:
Source Cast
Hello, Source Cast, how are you?

It is working fine for both Windows and Linux.

edited Jun 20, 2020 at 9:12

CommunityBot

11 silver badge

answered Aug 23, 2018 at 23:05

Hamza Anis

2,5651 gold badge28 silver badges38 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

probat Over a year ago

geez thanks, there is a book that states to remove newlines entered from user input, to use strings.TrimSuffix. I suppose that is not correct... Here is a link if you are curious. flaviocopes.com/golang-remove-new-line-from-readstring

Hamza Anis Over a year ago

Unfortunately it is correct for Linux but not for windows.

Collectives™ on Stack Overflow

String format truncating value

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related