Top Answers

1. Is "int (x), 1;" an ambiguous statement?
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2. Call to conversion operator instead of converting constructor in c++17 during overload resolution
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3. Non type template parameter of type std::string& compiles in gcc but not in clang
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4. if constexpr and requires-expression for ad-hoc concepts checking
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5. Declaring a member function with a typedef coming from a metafunction
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