Old problem with performance

[Derek Parnell]

On Sun, 08 Feb 2009 11:13:00 -0800, Walter Bright wrote:


> In particular, classes are *meant* to be used as reference types, but 
> the program is trying to treat them as value types. Virtual functions 
> are orthogonal to what value types are - a continuing problem C++ 
> programs have is conflating value types with reference types.

In D, what is the recommend technique to derive one user-defined value type
from another?

-- 
Derek Parnell
Melbourne, Australia
skype: derek.j.parnell