implemented mediator pattern

behavioral/visitor/visitor.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 )
 
+// Abstractions ...
 type Visitor interface {
 	VisitProductWithHighTask(ProductWithHighTax) float32
 	VisitProductWithLowTask(ProductWithLowTax) float32
@@ -13,18 +14,18 @@ type Visitable interface {
 	Accept(Visitor) float32
 }
 
+// Visitor
 type TaxVisitor struct {}
 func (v TaxVisitor) VisitProductWithHighTask(p ProductWithHighTax) float32 {
 	fmt.Println("Visiting Product With High Tax ...")
 	return p.Price * 1.3
 }
-
 func (v TaxVisitor) VisitProductWithLowTask(p ProductWithLowTax) float32 {
 	fmt.Println("Visiting Product With Low Tax ...")
 	return p.Price * 1.1
 }
 
-
+// Visitable objects...
 type ProductWithHighTax struct {
 	Price float32
 }