[#beman-optional-optional-03-2constructor-00]
= xref:beman.adoc[beman]::xref:beman/optional.adoc[optional]::xref:beman/optional/optional-03.adoc[optional]::optional
:relfileprefix: ../../../
:mrdocs:

Constructs the value from `u,` forwarding it if necessary.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class U = T>
constexpr
explicit(!std::is_convertible_v<U, T>)
optional(U&& u)
requires detail::enable_forward_value<T, U>;
----

== Description

If `u` is convertible to `T,` this is an explicit constructor.

Constructs the stored value with `u`.

== Parameters

[cols=2]
|===
| Name
| Description
| *u*
| The object to move construct from
|===


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