Value vs. pointer receiver (made with https://codeeval.dev)

main.go

// :collection Essential Go
package main

import (
	"fmt"
)

// :show start
type Foo struct {
	Str string
}

func (f Foo) Print() {
	fmt.Printf("Value of Str inside Print: '%s'\n", f.Str)
	fmt.Printf("Address of &f  inside Print: 0x%p\n", &f)
	f.Str = "changed"
}

func main() {
	fv := Foo{
		Str: "Foo",
	}
	fv.Print()
	fmt.Printf("Address of &fv before Print: 0x%p\n", &fv);
	fmt.Printf("Value of Str after Print: '%s'\n", fv.Str)
}
// :show end