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Boilerplates for C++
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| //Template Type Check | |
| template<typename T, typename F, | |
| typename = std::enable_if_t<std::is_invocable<F, T>::value> > | |
| void foo() | |
| {} | |
| template<typename T, typename F, | |
| typename = typename std::enable_if<std::is_invocable<F, T>::value>::type > | |
| void foo() | |
| {} | |
| template<typename T, typename F, | |
| typename std::enable_if<std::is_invocable<F, T>::value>::type* = nullptr > | |
| void foo() | |
| {} | |
| template<typename T, typename F> | |
| auto foo() -> std::enable_if_t<std::is_invocable<F, T>::value>::type | |
| {} | |
| template<typename T, typename F> | |
| void foo() | |
| { | |
| static_assert(std::is_invocable<F, T>::value); | |
| } |
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Ad-hoc polymorphism with templated type can be achieved using:
std::enable_if_t<std::is_xxxx::value>std::void_t<decltype(expression)>concept