[DEV] Completed example

phrasebook/ch04/generic_data_structure/main.go

@@ -3,8 +3,8 @@ package main
 import "fmt"
 
 type stackEntry struct {
-	next  *stackEntry
-	value interface{}
+	Next  *stackEntry
+	Value interface{}
 }
 
 type stack struct {
@@ -13,8 +13,8 @@ type stack struct {
 
 func (s *stack) Push(v interface{}) {
 	var e stackEntry
-	e.value = v
-	e.next = s.top
+	e.Value = v
+	e.Next = s.top
 	s.top = &e
 }
 
@@ -22,15 +22,19 @@ func (s *stack) Pop() interface{} {
 	if s.top == nil {
 		return nil
 	}
-	v := s.top.value
-	s.top = s.top.next
+	v := s.top.Value
+	s.top = s.top.Next
 	return v
 }
 
+func (s *stack) GetTop() *stackEntry {
+	return s.top
+}
+
 func main() {
 	s := &stack{}
 	s.Push("one")
 	s.Push("two")
 	s.Push("three")
-	fmt.Printf("%#v", s)
+	fmt.Printf("%#v", s.GetTop().Next)
 }