Go String Data Type #

The string data type is used to store a sequence of characters (text).
String values must always be surrounded by double quotes (").

Declaring Strings in Go #

You can declare strings using either the var keyword or the := shorthand.

package main
import ("fmt")

func main() {
  var txt1 string = "Hello!" // typed declaration with initial value
  var txt2 string            // typed declaration without initial value
  txt3 := "World 1"          // untyped declaration with initial value

  fmt.Printf("Type: %T, value: %v\n", txt1, txt1)
  fmt.Printf("Type: %T, value: %v\n", txt2, txt2)
  fmt.Printf("Type: %T, value: %v\n", txt3, txt3)
}

Result:

Type: string, value: Hello!
Type: string, value:
Type: string, value: World 1

Notes #

• A string without an initial value is set to the default empty string "".
• Strings are immutable in Go, meaning their content cannot be changed after creation.
• Strings can be concatenated using the + operator.

Example of concatenation:

package main
import ("fmt")

func main() {
  str1 := "Hello"
  str2 := "World"
  str3 := str1 + " " + str2
  fmt.Println(str3)
}

Output:

Hello World