[CppAD] copy of adfun object

[Brad Bell]

ADFun objects can have a large amount of information connected to them. 
For this reason, one should avoid making copies of the associated 
information. Along these lines, there is a default ADFun constructor 
that has a very minimal about of information in it. See the 
documentation for the ADFun default constructor:
    http://www.coin-or.org/CppAD/Doc/funconstruct.xml#Default%20Constructor

I would put an ADFun<Base> object in your new class and use the default 
constructor for the object. Then, define a member function that moves 
the current operation sequence into the ADFun<Base> object using the 
Dependent function; see
    http://www.coin-or.org/CppAD/Doc/dependent.xml

You can see an example of this intended use of CppAD at
    http://www.coin-or.org/CppAD/Doc/ad_fun.cpp.xml


  
Dominik Skanda wrote:
> Thank you for your reply,
> I want to tape a algorithmic function.
> This taped function I want to use inside a new class.
> Therefore I copy the ADFun object to this new class in the hope that I
> have all informations inside the new class. Specially I use the
> ForwardZero and ForwardOne methods inside this class. 
>
> Kind regards,
> Dominik Skanda
>
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