init commit

lectures/Vector.cpp

@@ -0,0 +1,69 @@
+// #include <iostream>
+// #include <memory>
+// #include <list>
+// #include <vector>
+
+// struct Element {
+//     int value;
+//     Element(int value) : value(value) {}
+// };
+
+// Реализация функции make_safe_vector()
+
+template <typename T>
+std::vector<std::unique_ptr<Element>> make_safe_vector(T&& container) {
+    std::vector<std::unique_ptr<Element>> result;
+
+    for (auto& el : container)
+        result.emplace_back(std::move(el));
+
+    container.clear();
+
+    return result;
+}
+
+// int main() {
+//     std::vector<Element*> unsafe_vector;
+//     unsafe_vector.emplace_back(new Element(0));
+//     unsafe_vector.emplace_back(new Element(42));
+//     unsafe_vector.emplace_back(new Element(900));
+
+//     auto safe_vector_1 = make_safe_vector(unsafe_vector);
+//     unsafe_vector.push_back(new Element(99));
+
+//     auto safe_vector_2 = make_safe_vector(safe_vector_1);
+
+//     auto safe_vector_3 = make_safe_vector(std::list<Element*>{new Element(1), new Element(2), new Element(3)});
+
+//     std::cout << "unsafe_vector: " << std::endl;
+//     for (auto& el : unsafe_vector) {
+//         std::cout << el->value << std::endl;
+//         delete el;
+//     }
+
+//     std::cout << "safe_vector_1: " << std::endl;
+//     for (auto& el : safe_vector_1)
+//         std::cout << el->value << std::endl;
+
+//     std::cout << "safe_vector_2: " << std::endl;
+//     for (auto& el : safe_vector_2)
+//         std::cout << el->value << std::endl;
+
+//     std::cout << "safe_vector_3: " << std::endl;
+//     for (auto& el : safe_vector_3)
+//         std::cout << el->value << std::endl;
+// }
+
+/*
+unsafe_vector:
+99
+safe_vector_1:
+safe_vector_2:
+0
+42
+900
+safe_vector_3:
+1
+2
+3
+*/