// Copyright 2017 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package fmt_test 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 ExampleStringer() { a := Animal{ Name: "Gopher", Age: 2, } fmt.Println(a) // Output: Gopher (2) }