从串行输入中删除 和 （CRLF）

Question

I'm currently writing Go code which reads a sensor value through an Arduino using the serial port. Currently I am getting "" and " " in my output. I know in Python, you can do:

line = line.decode('utf-8')

to get rid of the characters. How would you do that using Golang? I'm fairly new to the language so any help would be appreciated! Here is what a snippet of the output looks like currently:

"arduinoLED\"}
{\"temperature\"

Also if anyone could let me know how I can read a line in Go (similar to Python's line.readline()) that would be great.

Many thanks!

Answer 1

If you read a stream by lines using a default bufio.Scanner (which is the usual way) then both regular ( ) and CRLF ( ) line breaks will be discarded:

doc := "Hello
World!
Goodbye,
newlines!
"

scanner := bufio.NewScanner(bytes.NewReader([]byte(doc)))
for scanner.Scan() {
    fmt.Printf("%q
", scanner.Text()) // Note our own newline here
}
if err := scanner.Err(); err != nil {
    panic(err) // TODO: handle error properly
}

// Prints:
// "Hello,"
// "World!"
// "Goodbye,"
// "newlines!"

Of course, instead of the bytes reader in the example above you'll probably have an existing Reader but the usage should be identical otherwise.