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copied!<pre><code>struct myObj { //... char myVarChar; }; </code></pre> <p>This won't work. You either need a fixed size array, a pointer to char or use the struct hack. You won't be able to assign a pointer to this <code>myVarChar</code>.</p> <blockquote> <p>so i'd like to create my own lightweight string class which has no extra overhead std::string has.</p> </blockquote> <p>What extra overhead are you referring to? Have you tested and measured to see if <code>std::string</code> is really a bottleneck?</p> <blockquote> <p>I think std::string is represented contiguously</p> </blockquote> <p>Yes, mostly, the character buffer part. However, the following:</p> <blockquote> <p>(int)length(char[])data</p> </blockquote> <p>is not required by the standard. Translated: A string implementation need not use this particular layout of its data. And it may have additional data.</p> <p>Now, your lightweight string class is frought with errors:</p> <pre><code>class pString { public: char c; // typically this is implementation detail, should be private pString * pString::operator=(const char *); // need ctors, dtors at least as well // won't you need any functions on strings? }; </code></pre> <p>Try something along the lines of the following:</p> <pre><code>/* a light-weight string class */ class lwstring { public: lwstring(); // default ctor lwstring(lwstring const&); // copy ctor lwstring(char const*); // consume C strings as well lwstring& operator=(lwstring const&); // assignment ~lwstring(); // dtor size_t length() const; // string length bool empty() const; // empty string? private: char *_myBuf; size_t _mySize; }; </code></pre>

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