c++ - Searching for QtConurrent substitution (map-reduce) -

i heavily used qt concurrent in projects, until found not work.

so, there substitution?

i'm interested in map-reduce concept implementation. i've looked through boost::mapreduce, seems overcomplicated. mean, qt start task with

qtconcurrent::mappedreduced<map_result>(begin, end, mapfunction_or_function, reducefunction_or_functor) 

and use lamdas functors. boost have create own classes map task , reduce task.