Or you could just ask them "What's your library of choice for threading?" Sidenote: Senior people have been burned by the years where the STL was inconsistentl

Or you could just ask them "What's your library of choice for threading?" Sidenote: Senior people have been burned by the years where the STL was inconsistently implemented and horribly bloated and inefficient. That doesn't mean they won't quickly learn to love modern C++, especially if they're joining a codebase with good examples to follow.