userver
C++ Async Framework
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void_t.hpp
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1
#
pragma
once
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/// @file userver/utils/void_t.hpp
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/// @brief @copybrief utils::void_t
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#
include
<
type_traits
>
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USERVER_NAMESPACE_BEGIN
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namespace
utils
{
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#
if
(
__cpp_lib_void_t
>=
201411
&&
!
defined
(
__clang__
)
)
||
defined
(
DOXYGEN
)
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/// @brief std::void_t implementation with workarounds for compiler bugs
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///
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/// @ingroup userver_universal
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template
<
typename
...
T
>
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using
void_t
=
std
::
void_t
<
T
...>;
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#
else
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template
<
typename
... T>
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struct
make_void_t {
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using
type =
void
;
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};
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template
<
typename
... T>
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using
void_t =
typename
make_void_t<T...>::type;
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#
endif
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}
// namespace utils
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USERVER_NAMESPACE_END
userver
utils
void_t.hpp
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