Beautiful Folds
summary
Shows how C++17 fold expressions replace handwritten variadic template recursion to produce clearer, safer code; demonstrates concrete patterns for variadic reductions (sum, logical and/or, argument forwarding) and tuple unpacking, with working examples that compile on GCC and Clang under -std=c++17. Includes a one-header implementation and before/after snippets so the payoff—less boilerplate, fewer edge-case bugs, and simpler error messages—is immediately verifiable.
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