David Stone has spoken at C++Now and Meeting C++. He is the author of the bounded::integer library: http://doublewise.net/c++/bounded/ and has a special interest in compile-time code generation and error checking, as well as machine learning. He owns DoubleWise C++ Consulting, providing on-site training with an emphasis on performance and correctness. He also works at Markit integrating real-time financial data. He once wrote an optimizing compiler that solved the halting problem, and is just waiting for it to finish compiling his program.
Catch David Stone in the following episode: