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| template<typename... Ts> | 
| using | std::void_t = typename make_void<Ts...>::type | 
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| template<bool B> | 
| using | std::bool_constant = integral_constant<bool, B> | 
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| template<template< class... > class Op, class... Args> | 
| using | std::is_detected = typename detail::detector<detail::nonesuch, void, Op, Args...>::value_t | 
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| template<template< class... > class Op, class... Args> | 
| using | std::detected_t = typename detail::detector<detail::nonesuch, void, Op, Args...>::type | 
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| template<class Default, template< class... > class Op, class... Args> | 
| using | std::detected_or = detail::detector<Default, void, Op, Args...> | 
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| template<class Default, template< class... > class Op, class... Args> | 
| using | std::detected_or_t = typename detected_or<Default, Op, Args...>::type | 
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| template<class Expected, template< class... > class Op, class... Args> | 
| using | std::is_detected_exact = std::is_same<Expected, detected_t<Op, Args...>> | 
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| template<class To, template< class... > class Op, class... Args> | 
| using | std::is_detected_convertible = std::is_convertible<detected_t<Op, Args...>, To> | 
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| template<class T> | 
| using | std::remove_cvref_t = typename remove_cvref<T>::type | 
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| template<typename T> | 
| using | zyppng::remove_smart_ptr_t = typename remove_smart_ptr<T>::type | 
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| template<template< class... > class Op, class... Args> | 
| constexpr bool | std::is_detected_v = is_detected<Op, Args...>::value | 
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| template<class Expected, template< class... > class Op, class... Args> | 
| constexpr bool | std::is_detected_exact_v = is_detected_exact<Expected, Op, Args...>::value | 
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| template<class To, template< class... > class Op, class... Args> | 
| constexpr bool | std::is_detected_convertible_v = is_detected_convertible<To, Op, Args...>::value_t::value | 
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| template<template< class ... > class Templ, class Type> | 
| constexpr bool | zyppng::is_instance_of_v = is_instance_of<Templ,Type>::value | 
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