package main import ( "fmt" "runtime" "strconv" ) type Rectangle struct{} func (r *Rectangle) Height() int { h, _ := strconv.ParseInt("7", 10, 0) return int(h) } func (r *Rectangle) Width() int { return 6 } func (r *Rectangle) Area() int { return r.Height() * r.Width() } func main() { var r Rectangle runtime.Breakpoint() fmt.Println(r.Area()) }