fix 0709 bug

error/error0709.txt

@@ -0,0 +1,15 @@
+ error1: 
+ passing 'const EasySTL::vector<std::basic_string<char>, EasySTL::alloc>' as 'this' 
+ argument of 'T* EasySTL::vector<T, Alloc>::end() 
+ [with 
+ 	T = std::basic_string<char>; 
+ 	Alloc = EasySTL::alloc; 
+ 	EasySTL::vector<T, Alloc>::iterator = std::basic_string<char>*]' 
+ discards qualifiers [-fpermissive]
+         size_type size() const { return size_type(end() - begin());}
+
+
+answer:
+const对象只能调用const成员函数；在一个加了const限定符的成员函数中，不能够调用 非const成员函数。
+因为如果调用了非const成员函数，就违反了const成员函数不改变对象的规定。
+所以为begin() end() 函数添加const

test/testFun.h

@@ -9,7 +9,7 @@ namespace EasySTL {
     namespace Test{
     	template<class Container>
 		void print_container(Container& container, const std::string& name = ""){//不是每一个容器都有const_iterator
-			std::cout << "Container " << name << " :";
+			std::cout << name << " :";
 			for (auto val : container){
 				std::cout << val << " ";
 			}

test/vectorTest.cpp

@@ -5,11 +5,29 @@ namespace EasySTL {
 		void testCase1(){
 			//std::string old_SGI_vector = "old_SGI_vector";
 			//std::string new_EasySTL_vector = "new_EasySTL_vector";
-			stdVec<std::string> v1(10, "zzz");
-			easyVec<std::string> v2(10, "zzz");
-			EasySTL::Test::print_container(v1, "SGI_vector");
-			EasySTL::Test::print_container(v2, "EasySTL_vector");
-			assert(EasySTL::Test::container_equal(v1, v2));
+			//stdVec<std::string> v1(10, "zzz");
+			easyVec<std::string> v2(3, "zm");
+			//EasySTL::Test::print_container(v1, "SGI_vector");
+			EasySTL::Test::print_container(v2, "construct");
+
+            std::string a = "huyun";
+			v2.push_back(a);
+
+			EasySTL::Test::print_container(v2, "push_back");
+
+            v2.pop_back();
+
+            EasySTL::Test::print_container(v2, "pop_back");
+
+            auto p = v2.begin();
+
+            p = p + 2;
+
+            std::cout << "the second one" <<*p <<std::endl;
+
+
+			//assert(EasySTL::Test::container_equal(v1, v2));
+
 		}
 	}
 }

vector.h

@@ -6,7 +6,7 @@
 
 #include "allocator.h"
 #include "algorithm.h"
-//#include "iterator.h"
+#include "iterator.h"
 //#include "construct.h"
 #include "uninitialized.h"
 
@@ -46,8 +46,8 @@ namespace EasySTL {
         }
 
     public:
-        iterator begin() { return start_;}
-        iterator end()   { return finish_;}
+        iterator begin() const { return start_;}
+        iterator end() const  { return finish_;}
         size_type size() const { return size_type(end() - begin());}
         size_type capacity() const { return size_type(end_of_storage_ - begin());}
         bool empty() const { return begin() == end();}