CoCoA » CoCoALib

I found this is an email message (from me) of 20140613:

The (naive) attempt to add a JBMill to an ideal failed dismally :-(
There were several problems:
(1) you cannot have a data member of type std::auto_ptr<JBMill> because
     then the copy ctor won't work;
(2) with C++11 you could use std::shared_ptr instead of auto_ptr...
(3) there were problems with "circular includes": I wanted to add the
      field auto_ptr<JBMill> to IdealImpl in SparsePolyRing.H, but TmpJBMill.H
      already includes SparsePolyRing.H, so the include failed :-(

It might be possible to split SparsePolyRing.H into two files, but I need to
think about this before deciding what to do.

John Abbott wrote:

I found this is an email message (from me) of 20140613:
(1) you cannot have a data member of type std::auto_ptr<JBMill> because

(2) with C++11 you could use std::shared_ptr instead of auto_ptr...

SmartPtrIRC

(3) there were problems with "circular includes": I wanted to add the
field auto_ptr<JBMill> to IdealImpl in SparsePolyRing.H, but TmpJBMill.H
already includes SparsePolyRing.H, so the include failed :-(
It might be possible to split SparsePolyRing.H into two files, but I need to
think about this before deciding what to do.

It'd be worth having the implementation of SparsePolyRing::ideal in a separate file.
This data type is crucial in CoCoA and I think it deserves it's own file ;-)