Error(s):

source_file.cpp(11): error C2338: Not enough types to index
source_file.cpp(12): note: see reference to class template instantiation 'split_impl<I,FRONT,Ts...>' being compiled
source_file.cpp(31): error C2079: 'z' uses undefined class 'std::tuple<x<0>,x<1>>'
source_file.cpp(31): error C2440: 'initializing': cannot convert from 'nullptr' to 'int'
source_file.cpp(31): note: A native nullptr can only be converted to bool or, using reinterpret_cast, to an integral type
Microsoft (R) C/C++ Optimizing Compiler Version 19.00.23506 for x64