Arniey refactored embedding templates in the pytorch/FBGEMM repository to directly utilize scalar type enums, removing the need for an intermediate scalar_type helper function. This change streamlined the code generation process by simplifying template metaprogramming logic in C++, reducing unnecessary function calls and clarifying the intent of the code. The refactor was applied across multiple embedding template files, improving overall maintainability and readability without introducing any API changes. By focusing on code clarity and future maintainability, Arniey’s work addressed technical debt in the FBGEMM codebase and demonstrated a strong command of C++ and template metaprogramming techniques.