From: daniel.kruegler@googlemail.com   
      
   On 2012-01-25 20:26, Ulrich Eckhardt wrote:   
   > Just wondering, why isn't there an FAQ entry? As already mentioned   
   > above, swap() is an important function like ctor and dtor, and getting   
   > it right can be tricky. Especially the OP's case concerning where to put   
   > the overload or the second case above where blindly calling std::swap()   
   > would have been the wrong thing. What else is there to pay attention to?   
      
   I agree that a new FAQ entry would make sense, but the reason why there   
   is yet no one is that before C++11 the ADL-lookup in regard to swap and   
   "swap-like" functions (e.g. iter_swap) was not really clarified. Several   
   issues were fixed during that process, among them   
      
   http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#187   
   http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#226   
   http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#594   
   http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#742   
      
   In addition, a proper Swappable requirement set did not exist before   
   C++11, specified by   
      
   http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1771.html   
   http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3048.html   
      
   - Daniel   
      
      
      
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