I'm also not a c++ programmer, but from what I've read so far I'd say the [](){} part is a lambda function which: [] - captures no vars () - accepts no par

I'm also not a c++ programmer, but from what I've read so far I'd say the [](){} part is a lambda function which: [] - captures no vars () - accepts no parameters {} - has an empty body Wrapping it in (...)() immediately executes it.