Re: [boost] Shared Map

From: Lassi Tuura (lassi.tuura_at_[hidden])
Date: 2007-08-11 09:20:30

Hi,

> Libraries that produce needless copies are simply ill-designed, and  
> thus
> it is true great parts of the standard library are),

Well...  Having had to recent pleasure to find code like this:

   bool foo::check(T *obj) const
   {
     std::string name = obj->name();
     bool    value =  (name == "foo");
     value = value || (name == "bar");
     value = value || (name == "foobar");
     value = value || (name == "zoinc");
     value = value || (name == "barfy");
     value = value || (name == "zoobie");
     value = value || (name == "ayeyei");
     return value;
   }

That was one of the contributors to ~800'000 memory allocation calls  
per second.  It was called... often.

I'd say there's something a bit more fundamental going on here than  
_just_ a library design issue :-)  No class can be all things to all  
users.

Lassi