On 20:59, Dave Abrahams wrote:
On Thu, Feb 10, 2011 at 3:38 PM, Anders Dalvander<boost@dalvander.com> wrote:
* It is (currently) immutable and shares data, and thus fast to copy.
Is there a reason you think this is a better approach than you could have by using the small string optimization and simply doing a deep copy when the internal buffer is too small?
Thanks for your comments. Actually, the only reason I have for this approach is that I listened, perhaps too much, to other voices on this list. Voices which said that immutability was very useful and could provide optimization possibilities. Currently these potential optimizations are unused, except when copying the data. It is very easy to change the design, by changing the single data member from type `boost::shared_ptr<const std::string>` to `std::string`. That way the small string optimization, if any, of `std::string` could be utilized directly. Come to think of it, the type could actually be specified as a typedef of the encoding template parameter. Regards, Anders Dalvander -- WWFSMD?