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POerror: no match for 'operator[]' in... <near match>
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copied!<p>This fail to compile in gcc 4.1.2 / RedHat 5 :</p> <pre><code>#include <string> #include <vector> #include <map> class Toto { public: typedef std::string SegmentName; }; class Titi { public: typedef Toto::SegmentName SegmentName; // import this type in our name space typedef std::vector<SegmentName> SegmentNameList; SegmentNameList segmentNames_; typedef std::map<SegmentName, int> SegmentTypeContainer; SegmentTypeContainer segmentTypes_; int getNthSegmentType(unsigned int i) const { int result = -1; if(i < segmentNames_.size()) { SegmentName name = segmentNames_[i]; result = segmentTypes_[ name ]; } return result; } }; </code></pre> <p>The error is :</p> <pre><code>error: no match for 'operator[]' in '(...)segmentTypes_[name]' /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/stl_map.h:340: note: candidates are: _Tp& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](const _Key&) [with _Key = std::basic_string<char, std::char_traits<char>, std::allocator<char> >, _Tp = int, _Compare = std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, _Alloc = std::allocator<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, int> >] </code></pre> <p>Why ? The map is rather straightforward. I guess this has to do with the typedefs, but what is wrong ? </p> <p>[edit] Even if I remove all the <code>typedefs</code> and use <code>std::string</code> everywhere, the problem persists... Am I misusing maps ?</p>

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