I am experimenting with templates in C++ by implementing linear algebra library, thus this example might not be the best fit for the job.

I want to make a class that will take multiple functions (function pointers, lambdas, classes with operator(), etc), save them in a tuple, and then call all of them with passed arguments (assuming that each function is callable with them). I also want to put it under templated interface so that the caller only knows about required arguments and return types of functions (which will be required only for bool specialization). Here’s what I approximately am trying to achieve (and full version):

So,

I’m trying to pass Args parameters from template to container deque.emplace_back() call

Either there is something wrong with my C++ understanding, or there’s a hidden typo somewhere… I wasted hours on those few LOCs.