Hi there, in the Sage library we cannot write the following C++ code:
Class a = Class() since Cython turns the statement cdef Class a = Class() into Class a a = Class() which only works when there is a copy constructor. In the Sage library we sometimes use the follow construct in order to work around this Cython vs. C++ incompatibility: Class a Construct<Class>(&a) For example check the PolyBoRi wrapper and the NTL wrapper. There are also variants of this called Construct_p<Class>(&a, one_parameter) and so forth. I'm wrapping CryptoMiniSat at the moment (a general purpose (!) SAT solver which one this year's SAT Race). When I try to use this construct in my wrapper I get a complaint from g++ that Construct wasn't defined in the scope; yet I cannot see what we are doing special in the PolyBoRi or NTL wrapper which would have an affect on that. Also searching online for this construction also returned nothing of interest as far as I can tell, mainly because one is overwhelmed with C++ constructor introductions. Thus, my question: does any of you C++ gurus now where this thing is defined and what I have to do (or not to do) in order to use it? Cheers, Martin -- name: Martin Albrecht _pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99 _otr: 47F43D1A 5D68C36F 468BAEBA 640E8856 D7951CCF _www: http://martinralbrecht.wordpress.com/ _jab: martinralbre...@jabber.ccc.de -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
