Stringer in Go

Posted by GoDoc
Public (Editable by Users)

Stringer is implemented by any value that has a String method, which defines the “native” format for that value. The String method is used to print values passed as an operand to any format that accepts a string or to an unformatted printer such as Print.

Go
Edit 
package main

import (
	"fmt"
)

// Animal has a Name and an Age to represent an animal.
type Animal struct {
	Name string
	Age  uint
}

// String makes Animal satisfy the Stringer interface.
func (a Animal) String() string {
	return fmt.Sprintf("%v (%d)", a.Name, a.Age)
}

func main() {
	a := Animal{
		Name: "Gopher",
		Age:  2,
	}
	fmt.Println(a)
}