From 5fe2f0aa7f75ef6879e29e3749f902e4e3522cb5 Mon Sep 17 00:00:00 2001
From: Jian Han <jianhan@mail.com>
Date: Sat, 14 Apr 2018 22:28:24 +1000
Subject: [PATCH] [DEV] Completed example

---
 phrasebook/ch04/generic_data_structure/main.go | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/phrasebook/ch04/generic_data_structure/main.go b/phrasebook/ch04/generic_data_structure/main.go
index 0a38f18..ce44821 100644
--- a/phrasebook/ch04/generic_data_structure/main.go
+++ b/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)
 }