Thorsten Ottosen writes:

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Dmitry Vinogradov skrev: Boost.Array offers constant size container with preallocated buffer, Boost.Optional provides from zero to one element. There are no STL container with preallocated buffer and it seems custom allocator does not help to do this with existing containers.

Does any container exist to offer functionality like Boost.Array but allowing to store from 0 to N elements? Is there any interest in such container?

PS. It's similar to fixed_string but as a generic container. Please see http://www.cs.aau.dk/~nesotto/boost/auto_buffer.zip http://www.cs.aau.dk/~nesotto/boost/trunk/libs/auto_buffer/doc/html/

I was looking at the documentation and the Serialization and "Differences from std::vector<T>" pages were both empty. It would be nice to indicate there's nothing there yet for those pages. On the Semantics page is says: auto_buffer( const auto_buffer& r ); - *Effect:* Copy constructor. - *Postconditions:* capacity() == max(r.size(),N) && size() == r.size() . - *Throws:* Nothing if size() <= N and the copy constructor of T cannot throw. Otherwise this might throw exceptions from the allocator of from T's copy constructor. I think there's a typo in the last sentence there. -- Brian Wood Ebenezer Enterprises www.webEbenezer.net "Then Samuel took a rock and set it up between Mizpah and Shen. He named it Ebenezer [Rock of Help] and said, 'Until now the LORD has helped us.'"