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POUnable to write my own iterator based on an STL iterator
 

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  1. POUnable to write my own iterator based on an STL iterator
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    <p>I have a little problem while trying to implement a container, Set, based on a linked list. Yeah, I know that there's an STL implementation of a set, but this is for homework. :)</p> <p>So, this is what I have done so far:</p> <p>my Set.h file looks like that:</p> <pre><code>template &lt;class T&gt; class Set { private: typedef std::list&lt;T&gt; base_container; base_container items; public: class myIterator { public: typename base_container::iterator base_iterator; myIterator() { } }; void addItem(const T item) { items.push_back(item); } typedef typename Set&lt;T&gt;::myIterator setIterator; setIterator begin() { return items.begin(); } setIterator end() { return items.end(); } Set&lt;T&gt;(void) { } ~Set&lt;T&gt;(void) { } }; </code></pre> <p>Now, main.cpp:</p> <pre><code>#include "Set.h" int main(void) { Set&lt;int&gt; mySet; mySet.addItem(1); mySet.addItem(2); mySet.addItem(3); mySet.addItem(4); Set&lt;int&gt;::myIterator x; x = mySet.begin(); // produces an error about non-convertible types. return EXIT_SUCCESS; } </code></pre> <p>The error is as follows:</p> <pre><code>error C2664: 'Set&lt;T&gt;::myIterator::myIterator(const Set&lt;T&gt;::myIterator &amp;)' : cannot convert parameter 1 from 'std::_List_iterator&lt;_Mylist&gt;' to 'const Set&lt;T&gt;::myIterator &amp;' </code></pre> <p>Clearly I messed things up, but I'm not sure which part of the code is actually the problem. Any suggestions about how to fix this? Any helpful information will be appreciated.</p> <p>Thanks. :)</p>
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    1. COIt would help to see the error message
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    2. COoh, yeah, of course, sorry: error C2664: 'Set<T>::myIterator::myIterator(const Set<T>::myIterator &)' : cannot convert parameter 1 from 'std::_List_iterator<_Mylist>' to 'const Set<T>::myIterator &'
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