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POhow to copy an inherited class from its base class pointer without splicing?
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copied!<p>I am having some trouble with trying to create a copy of a class from a pointer to its base class. It is best illustrated through this example:</p> <pre><code>#include <iostream> #include <vector> class Base { public: Base() { } virtual void test() { std::cout << "I am just the base class\n"; } }; class First : public Base { public: First() { } void test() { std::cout << "This is the First class\n"; } }; class Second : public Base { public: Second() { } void test() { std::cout << "This is the Second class\n"; } }; int main() { First *f = new First(); Second *s = new Second(); // First, I keep a vector of pointers to their base class std::vector<Base *> ptrs; ptrs.push_back(f); ptrs.push_back(s); ptrs[0]->test(); // Properly calls the implemented virtual class by inheritor ptrs[1]->test(); // Properly calls the implemented virtual class by inheritor // Now, I want to *copy* the class without it being spliced to just the base class // from the ptrs vector (not from 'f') First *f2 = new First(*ptrs[0]); } </code></pre> <p>The error I end up getting is:</p> <pre><code>test.cpp: In function ‘int main()’: test.cpp:35: error: no matching function for call to ‘First::First(Base&)’ test.cpp:12: note: candidates are: First::First() test.cpp:10: note: First::First(const First&) </code></pre> <p>Is there any way to cast this pointer to copy the full objected, and not just the base class? Or do I need to store a pointer to the inheritor to make this work?</p>

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