Golang: String Backslash Escape

Within a double quoted string, character sequence starting with backslash may have special meaning. e.g. \n means newline.

package main

import "fmt"

func main() {
	var x = "a\nb"
	fmt.Println(x)
}

// prints
// a
// b

Here's complete list:

• \a → U+0007 alert or bell
• \b → U+0008 backspace
• \f → U+000C form feed
• \n → U+000A line feed or newline
• \r → U+000D carriage return
• \t → U+0009 horizontal tab
• \v → U+000b vertical tab
• \\ → U+005c backslash
• \" → U+0022 double quote
• \ooo → o is octal digit.
• \xhh → a byte. h here is a hexadecimal digit.
• \uhhhh → a Unicode character whose codepoint can be expressed in 4 hexadecimal digits. (pad 0 in front)
• \Uhhhhhhhh → a Unicode character whose codepoint can be expressed in 8 hexadecimal digits. (pad 0 in front)

[see ASCII Characters ␀ ␣ ¶]

package main

import "fmt"

func main() {
	fmt.Printf("%v\n", "A" == "\x41")       // true
	fmt.Printf("%v\n", "♥" == "\u2665")     // true
	fmt.Printf("%v\n", "😂" == "\U0001f602") // true
}

Reference

The Go Programming Language Specification - The Go Programming Language#String_literals