[cl-graph-devel] copying a graph

[Gary King]

[responding to list]

> Thanks. I look forward to your input, since if I end up writing  
> copy-graph myself I want to be sure to do it right.

Well, I'm not sure I'm doing it _right_ either!

I'm in the midst of added metacopy to common-lisp.net. It provides  
some low-level stuff and two higher-level routines: defcopy-methods  
and copy-thing. The first lets you specify how to treat the slots of  
a class when copying; the second creates copies. The keyword  
parameters for defcopy-methods are :copy, :set, :copy-all and :set- 
all. Setting means to do a setf of the slot (a shallow copy) whereas  
copying is creating a deep-copy.

I'll let you know when the code is available. (If you're "desperate",  
I'd be happy to mail you a tarball).
-- 
Gary Warren King
metabang.com
http://www.metabang.com/