Compile Time tuple_slice

Compile-time tuple slicing with constexpr metaprogramming

This hard coding problem tests your ability to manipulate tuples at compile time using C++ template metaprogramming. It requires you to implement a function that extracts elements from a tuple at specified indices—all without runtime overhead. The challenge sits at the intersection of variadic templates, constexpr semantics, and type-level computation.

Solving this requires understanding how to encode compile-time indices as template parameters, how to unpack and repack tuples using index sequences, and how to ensure the entire operation remains a constexpr computation. You will need to reason about both the types involved and the constants that drive the selection, then wire them together so the compiler can verify correctness during translation.

• Variadic template parameter packs and expansion
• std::integer_sequence and index-sequence patterns
• constexpr function design and compile-time evaluation
• Template specialization for type-level dispatch