C++ Library containing a lot of needful things: Stack Trace, Command Line Parser, Resource Handling, Configuration Files, Unix Command Execution, Directories, Regular Expressions, Tokenizer, Function Trace, Standard Extensions.
26 lines
607 B
26 lines
607 B
21 years ago
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#include <mrw/smartpointer.hpp>
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class A {
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public: int a;
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protected: virtual void fn() {} // dynamic_cast requires a virtual function
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};
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class B: virtual public A {
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public: int b;
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};
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int main(int, char**) {
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utl::SmartPointer<int> i1 = new int;
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*i1 = 13;
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utl::SmartPointer<int> i2 = i1;
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utl::SmartPointer<int> i3;
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if (!i3) i3 = i2;
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*i2 = 666; // *i1 is now 666 too
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utl::SmartPointer<A> b1 = new B;
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utl::SmartPointer<B> b2 = b1; // b1 and b2 point to the same instance
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b1->a = 0; // b1->b does not compile
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b2->a = 1;
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b2->b = 2;
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return 0;
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} // memory is automatically freed
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