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POWhy did NetBeans show incorrect auto-completion?
 

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  1. POWhy did NetBeans show incorrect auto-completion?
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    <p>I had an exam yesterday for Programming I at the end of my first semester. It was pretty basic, except I made a really, really obscure mistake that I wanted to ask the more experienced people here about:</p> <p>I basically had a class Library that contained a vector that contains elements of Loan* which contains a Customer and Book class. Kind of like this:</p> <pre><code>class Library { vector&lt;Loan*&gt; loans_; }; class Loan { Customer *customer_; Book *book_; }; </code></pre> <p>I had a function which required going through all the initialized book objects and seeing which ones belonged to whom, like this:</p> <pre><code>Customer *getBorrower(Book *book) { vector&lt;Loan*&gt;::iterator iter; for( iter = loans_.begin(); iter != loans_.end(); ++iter ) { if( (*iter).getBook() == book ) return (*iter).getCustomer(); else continue; } return 0; } </code></pre> <p>This stumped me, because in the Netbeans 6.9 IDE the (*iter). showed me a list of all the methods of the Loan object. </p> <p>I was just about to quit the exam when I loaded up VC++08 and it asked me if I didn't want to use <code>-&gt;</code> instead. </p> <p><code>(*iter)-&gt;getBook();</code> worked to my chagrin.</p> <p>So my question is: why did the IDE allow me to use <code>.</code> and even spit out a list of the methods as well as for <code>-&gt;</code>? To my knowledge, it doesn't do this kind of madness anytime else. What exactly happened here? I'm not understanding what I tried to make the method do that gave me that weird netbeans error "Is not of type Loan*"</p> <p>Second question: This is a style question. I commented to the professor about this, but he didn't seem too agreeable. The exam guidelines also had us create a public </p> <p><code>vector&lt;Book*&gt;</code> and <code>vector&lt;Customer*&gt;</code>.</p> <p>We then accessed these from the main function to run our unit tests. I found this to be in extremely bad practise since a simple getter function would have provided us with what we needed without publicizing our information. Was I right to call this out as a bad design choice? </p> <p><strong>Error:</strong> </p> <p>Library.cpp:14: error: request for member <code>getCustomer' in</code>(&amp;iter)->__gnu_cxx::__normal_iterator&lt;_Iterator, _Container>::operator* with _Iterator = Loan**, _Container = std::vector >', which is of non-class type `Loan*'</p>
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    1. USMatthew Flaschen
    1. USIAE
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    1. COYou seem to have left out the description of the error which "stumped you".
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      1. POWhy did NetBeans show incorrect auto-completion?
      1. USPéter Török
    2. COOh crap! Thanks, I'll go fetch it!
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    3. COI think IDE was telling you to do `iter->getBook()` not `(*iter)->getBook()` isn't it?
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      1. USNaveen
 

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