Go等同于PHP的__toString方法吗？

Question

In php exists a __toString() method that allow to make a taylored representation of an object. For example:

final class Foo
{
    public function __toString()
    {
        return "custom representation";
    }
}

$foo = new Foo();
echo $foo; // this will output "custom representation"

In Go it is possible to create a struct:

type Person struct {
    surname string
    name    string
}

sensorario := Person{
    "Senso",
    "Rario",
}

fmt.Println(sensorario) // this will output "{Senso Rario}"

It is possible to add a toString method to the struct?

---

EDIT:

I've found this solution:

func (p *Person) toString() string {
    return p.surname + " " + p.name
}

fmt.Println(simone.toString())

But what I am looking for, is the way to replace

fmt.Println(simone.toString())

with

fmt.Println(simone)

Answer 1

I think you're looking for the Stringer interface.

type Stringer interface {
    String() string
}

Any type that implements this interface will be automatically stringified using it by many different libraries, obviously including the fmt package, and will indeed work in your example of fmt.Println.