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1 files changed, 58 insertions, 0 deletions
-rw-r--r--Smart_pointers/1. uniqe_ptr.cpp58
diff --git a/Smart_pointers/1. uniqe_ptr.cpp b/Smart_pointers/1. uniqe_ptr.cpp
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+/******************************************************************************
+
+ Online C++ Compiler.
+ Code, Compile, Run and Debug C++ program online.
+Write your code in this editor and press "Run" button to compile and execute it.
+
+*******************************************************************************/
+
+#include <iostream>
+#include <memory>
+
+using namespace std;
+
+class Test
+{
+public:
+ Test()
+ {
+ cout<<"Test()"<<endl;
+ }
+ Test(const Test& other)
+ {
+ cout<<"Copy constructor"<<endl;
+ }
+ Test& operator=(const Test& other)
+ {
+ cout<< "Assignment operator" <<endl;
+ }
+ ~Test()
+ {
+ cout<<"Detructor"<<endl;
+ }
+
+};
+int main()
+{
+ {
+ unique_ptr<Test> smart_pointer_1(new Test()); //Test()
+
+ Test* obj = smart_pointer_1.get(); //От тук иматаме достъп до паметта, към която сочи пойнтера.
+ //delete obj; // Това не трябва да се прави! smart_pointer_1 не знае, че паметта е освободена и ще се опита да я освободи, което ще доведе до грешка!
+
+ } //Test (Паметта се освобождава сама)
+
+ {
+
+ unique_ptr<Test> smart_pointer_2(new Test());
+
+ unique_ptr<Test> smart_pointer_3 = move(smart_pointer_2);
+ // unique_ptr<Test> smart_pointer_3(smart_pointer_2); //този синтаксис (както и оператор =) не е валиден! Те бяха валидни в стария и не толкова иползван auto_ptr.
+
+ smart_pointer_2.get(); // Това ще даде NULL, защото smart_pointer_3 "открадна" обекта на smart_pointer_2
+
+ }
+
+
+ return 0;
+}