std::expected<T,E>::error
From cppreference.com
C++
Utilities library
|
|
constexpr
const E& error(
)
const
&
noexcept
;
|
(1) | (since C++23) |
constexpr E& error(
)
&
noexcept
;
|
(2) | (since C++23) |
constexpr
const E&& error(
)
const
&&
noexcept
;
|
(3) | (since C++23) |
constexpr E&& error(
)
&&
noexcept
;
|
(4) | (since C++23) |
Accesses the unexpected value contained in *this.
If has_value()
is true, the behavior is undefined.
Return value
1,2)
unex
3,4)
std::move(
unex
)
Example
This section is incomplete Reason: no example |
See also
returns the unexpected value if present, another value otherwise (public member function) |
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accesses the expected value (public member function) |
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returns the expected value (public member function) |
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checks whether the object contains an expected value (public member function) |