Why isn't my Stringer interface method getting invoked? When using fmt.Println

Question

Suppose I have the following code:

package main

import \"fmt\"

type Car struct{
    year int
    make string
}

func (c *Car)String() string{
    return fm         


        

Answer 1

It's only related to implementation of fmt instead of Go however.

String() with pointer receiver would be invoked by https://github.com/davecgh/go-spew since spew print things in this way:

v = reflect.ValueOf(arg)

...

switch iface := v.Interface().(type) {
    case fmt.Stringer:
        defer catchPanic(w, v)
        if cs.ContinueOnMethod {
            w.Write(openParenBytes)
            w.Write([]byte(iface.String()))
            w.Write(closeParenBytes)
            w.Write(spaceBytes)
            return false
        }
        w.Write([]byte(iface.String()))
        return true
    }