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POWhy does C++ auto_ptr have two copy constructors and two assignment operators but one default constructor?
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2010-11-29T19:08:35.243
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<p>Why does it need two forms? Thanks</p> <pre><code> explicit auto_ptr (T* ptr = 0) throw() auto_ptr (auto_ptr& rhs) throw() template<class Y> auto_ptr (auto_ptr<Y>& rhs) throw() auto_ptr& operator= (auto_ptr& rhs) throw() template<class Y> auto_ptr& operator= (auto_ptr<Y>& rhs) throw() </code></pre>
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Why does C++ auto_ptr have two copy constructors and two assignment operators but one default constructor?
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