A book of recipes to create binders that allow importing C, and C++ (or Fortran) modules from scripting languages such as Python, Ruby, Perl, Tcl, etc. would turn very useful. The SWIG distribution comes with a set of examples et al., but nothing beats a well written pragmatic book on the subject. Considering the amount of code written in C and C++ sometimes it makes sense to reuse it by gluing different pieces together instead of trying to reinvent the wheel. I have met several people with practical problems easily solved via SWIG. Most of the time they just give up and continue doing things the harder way due to the lack of better literature about the subject (and inertia too). Who could write a PragProg book about SWIG? I really don’t know for sure, but maybe Dave Beazley and William Fulton et al.?