std::experimental:: void_t
From cppreference.com
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cpp
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experimental
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Defined in header
<experimental/type_traits>
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template
<
class
...
>
using void_t = void ; |
(library fundamentals TS v2) | |
A utility metafunction that maps a sequence of any types to the type void .
Notes
This utility metafunction is used in template metaprogramming to detect ill-formed types in
SFINAE
context. First voted into C++17 as
std::void_t
, it was later added as well to the library fundamentals TS as
std::experimental::void_t
, because it is a dependency of the
detection idiom
and the LFTS v2 is based on C++14.
See also
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(C++17)
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void variadic alias template
(alias template) |