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Difficulty: Easy
Category: template_metaprogramming
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Topics: template-metaprogramming, sfinae, enable-if, type-traits, c++, c++17
In quantitative finance, utility functions must be robust to prevent costly errors in P&L calculations. SFINAE (Substitution Failure Is Not An Error) is a C++ technique used to constrain function templates to specific types at compile time. This ensures that a summation routine, for example, can only be called with numeric types, producing a hard compile error for invalid types like strings or pointers. Task Implement the function template accumulate_numeric(const std::vector<T>& values). This
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