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cpp-libs
Actor Framework
Commits
58fc8dd8
Commit
58fc8dd8
authored
Feb 09, 2018
by
Dominik Charousset
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Add `transfer_const` utility trait
parent
1ba9006e
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libcaf_core/caf/detail/type_traits.hpp
libcaf_core/caf/detail/type_traits.hpp
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libcaf_core/caf/detail/type_traits.hpp
View file @
58fc8dd8
...
@@ -613,6 +613,20 @@ struct is_specialization : std::false_type { };
...
@@ -613,6 +613,20 @@ struct is_specialization : std::false_type { };
template
<
template
<
class
...
>
class
T
,
class
...
Ts
>
template
<
template
<
class
...
>
class
T
,
class
...
Ts
>
struct
is_specialization
<
T
,
T
<
Ts
...
>>
:
std
::
true_type
{
};
struct
is_specialization
<
T
,
T
<
Ts
...
>>
:
std
::
true_type
{
};
/// Transfers const from `T` to `U`. `U` remains unchanged if `T` is not const.
template
<
class
T
,
class
U
>
struct
transfer_const
{
using
type
=
U
;
};
template
<
class
T
,
class
U
>
struct
transfer_const
<
const
T
,
U
>
{
using
type
=
const
U
;
};
template
<
class
T
,
class
U
>
using
transfer_const_t
=
typename
transfer_const
<
T
,
U
>::
type
;
}
// namespace detail
}
// namespace detail
}
// namespace caf
}
// namespace caf
...
...
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