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How To Detect Function Overloads in C++17, std::from_chars Example

by Bartlomiej Filipek

From the article:

Working with real examples is better in most of the cases, so I like that we could show how the detection pattern works on a real function: std::from_chars. The full check used various of techniques: SFINAE, void_t, decltype, std::declval, std::true_type, std::false_type and partial template specialisation. Plus we even used if constexpr!