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cpp-libs
Actor Framework
Commits
a6c9e6f0
Commit
a6c9e6f0
authored
Aug 21, 2013
by
Dominik Charousset
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added optional<void> specialization
parent
cf96f365
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cppa/optional.hpp
cppa/optional.hpp
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cppa/optional.hpp
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a6c9e6f0
...
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@@ -239,6 +239,27 @@ class optional<T&> {
};
template
<
>
class
optional
<
void
>
{
optional
()
:
m_valid
(
true
)
{
}
optional
(
const
none_t
&
)
:
m_valid
(
false
)
{
}
inline
bool
valid
()
const
{
return
m_valid
;
}
inline
bool
empty
()
const
{
return
!
m_valid
;
}
inline
explicit
operator
bool
()
const
{
return
valid
();
}
inline
bool
operator
!
()
const
{
return
empty
();
}
private:
bool
m_valid
;
};
/** @relates option */
template
<
typename
T
>
struct
is_optional
{
static
constexpr
bool
value
=
false
;
};
...
...
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