Initial Course

modules/06_oop_basics/src/polymorphism.cpp

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+#include "polymorphism.hpp"
+
+namespace oop {
+
+auto total_area(const std::vector<std::unique_ptr<Shape>>& shapes) -> double {
+    double total = 0.0;
+    for (const auto& shape : shapes) {
+        // TODO: Add each shape's area using polymorphism
+        (void)shape;
+    }
+    return total;
+}
+
+auto shape_names(const std::vector<std::unique_ptr<Shape>>& shapes)
+    -> std::vector<std::string> {
+    std::vector<std::string> names;
+    for (const auto& shape : shapes) {
+        // TODO: Collect shape->name()
+        (void)shape;
+    }
+    return names;
+}
+
+auto Counter::copies() -> int { return copies_; }
+
+}  // namespace oop