How to convert a rune to unicode-style-string like `\u554a` in Golang?

Question

If you run fmt.Println(\"\\u554a\"), it shows \'啊\'.

But how to get unicode-style-string \\u554a from a rune \'啊\' ?

Answer 1

You can use fmt.Sprintf along with %U to get the hexadecimal value:

test = fmt.Sprintf("%U", '啊')
fmt.Println("\\u" + test[2:]) // Print \u554A