Go, X does not implement Y (… method has a pointer receiver)

foo.go

package main

import (
	"fmt"
)

type Foo interface {
	Bar()
}

type Baz struct {
}

func (b *Baz) Bar() {
	fmt.Println("this is Bar in Baz")
}

func A(f Foo) {
	f.Bar()
}
func main() {
	var f Foo
	b := Baz{}
	// This compile-time error arises when you try to assign
	// or pass (or convert) a concrete type to an interface
	// type; and the type itself does not implement the
	// interface, only a pointer to the type.
	f = &b
	A(f)
	
	// The following is wrong approach
	// b := Baz{}
	// A(b)
}

If anyone want to dive in deep, I just wrote a post about this. You can find it on this

dead bloody link

link is broken