Hi, first of all, YES, the library should be included in BOOST, in my opinion. In addition: * What is your evaluation of the design? Very cool. Looks like a 1:1 translations from some good algorithm books into code :-) * What is your evaluation of the implementation? I spent some time browsing through the macro code hoping it would help me to solve a problem of my own which looked similar (turned out it wasn't). Never being a fan of too much macro code, I have to say that this is very nicely written! My only concerns: - It seems to me that the implementation is spread over more files than necessary. It made following the call stack a bit tiresome. - I a bit torn between a) Steven's comment who would like to see CONTRACT_OLDOF being replaced by the would-be keyword in a possible future standard b) boost macros being clearly visible as such, leaving translation to future standard keywords to the user of the library, e.g. #define foreach BOOST_FOREACH I tend towards b). * What is your evaluation of the documentation? Excellent! * What is your evaluation of the potential usefulness of the library? It is a very good proof of concept and hopefully the basis for continued discussions about including contracts into the C++ language. Due to a lack of formal contracts in much of day to day programming and the enormous compile time overhead, I don't see the library being used all over the place anytime soon, but I expect it to be used in generic algorithms, helping both developers and library users. * Did you try to use the library? With what compiler? Did you have any problems? Sadly: No. Did not find the time. * How much effort did you put into your evaluation? A glance? A quick reading? In-depth study? I spent a few hours with the code, maybe two hours with the documentation and I followed some of the discussions during the review period. * Are you knowledgeable about the problem domain? I would not call myself an expert, but I know enough to say: I'd really like to have Boost.Contract available the next time I write a mission-critical function/class/library! Best regards, Roland PS: Sorry for being late. I'm hoping for lenience since the review period was announced a bit late as well :-)