Golang : How to print rune, unicode, utf-8 and non-ASCII CJK(Chinese/Japanese/Korean) characters?


Tags : golang rune utf8 quoted-verb

Problem :

You want to print rune, unicode or CJK(Chinese/Japanese/Korean) characters with Golang, but you are getting funny result. How to print rune properly?

Solution :

Use quoted verb in your Printf statement. From https://blog.golang.org/strings :

"The %q (quoted) verb will escape any non-printable byte sequences in a string so the output is unambiguous."

For example :

 package main

 import (
 "fmt"
 )

 func main() {
 sr := '\u212A'
 fmt.Println(sr) // wrong way to print!

 fmt.Printf("%+q\n", sr) // print back the unicode
 fmt.Printf("%q\n", sr)  // print K (Kelvin symbol)

 src := '你'
 fmt.Printf("%q\n", src)  // print character 你
 fmt.Printf("%+q\n", src) // print unicode codepoint

 }

Output :

8490

'\u212a'

'K'

'你'

'\u4f60'

Reference :

https://blog.golang.org/strings



Tags : golang rune utf8 quoted-verb

By Adam Ng

IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.


Advertisement