Do something useless with C++ templates

SLR in C++ templates

SLR stands for Simple LR parser, actually there is no parser here, it just calculates all of the generations.

Dijkstra in C++ templates

The Dijkstra algorithm for shortest path, but in templates args.

LLRB in C++ templates

LLRB stands for Left Leaning Red-Black tree, but in templates args.

Indexing type sequence

For a known type dictionary std::tuple<Ts...>, and for a given type sequence std::tuple<Us...>, find std::index_sequence<Is...> , where index is the index value in the dictionary of each type in the given type sequence.