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Retrieves the contained results or throws an exception.
const results&
as_results() const&;
If *this
contains a results object
(this->has_results()
== true),
retrieves a reference to it. Otherwise, throws an exception.
Strong guarantee. Throws on invalid input.
|
Type |
Thrown On |
|---|---|
|
|
If |
The returned reference is valid as long as *this is alive and hasn't been assigned
to.