Code AnalysisIntermediate 60s
void_t detection idiom SFINAE
template<class, class = void>
struct has_size : std::false_type {};
template<class T>
struct has_size<T, std::void_t<decltype(std::declval<T>().size())>>
: std::true_type {};
What does has_size<std::vector<int>>::value evaluate to, and why?
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