I consider using double cells for efficient implementation of binary trees.
Is this safe? (i.e. no pre-assumptions made somewhere what these are used for) For prototyping I intended to add double-cons set-cbr! set-ccr! cbr ccr to the scheme level. Is this safe? They will only contain or refer to SCM data types. Of course I could add an own datatype, but as double cells contains exactly what I need and they are used internally I consider them being the obvious choice. I wrote to both user and devel as I consider this may be more of a devel question.
