[#beman-optional-optional-03-2constructor-0c]
= xref:beman.adoc[beman]::xref:beman/optional.adoc[optional]::xref:beman/optional/optional-03.adoc[optional]::optional
:relfileprefix: ../../../
:mrdocs:

Copy constructs the value from `rhs` if it has one.

== Synopsis

Declared in `<beman/optional/optional.hpp>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
optional(xref:beman/optional/optional-03.adoc[optional] const& rhs)
requires std::is_copy_constructible_v<T> && (!std::is_trivially_copy_constructible_v<T>);
----

== Parameters

[cols=2]
|===
| Name
| Description
| *rhs*
| The object to copy construct from
|===


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