[#absl-make_optional-0b]
= xref:absl.adoc[absl]::make_optional
:relfileprefix: ../
:mrdocs:

`make_optional` overloads

== Synopses

Declared in `<absl/types/optional.h>`

Creates an `optional` holding a copy of the given value.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename T>
constexpr
decltype(std::make_optional(
    std::declval<T>()))
xref:absl/make_optional-06.adoc[make_optional](T&& value);
----

[.small]#xref:absl/make_optional-06.adoc[_» more..._]#

Creates an `optional<T>` by constructing `T` in place.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename T,
    typename... Args>
constexpr
decltype(std::make_optional<T>(
    std::declval<Args>()...))
xref:absl/make_optional-02.adoc[make_optional](Args&&... args);
----

[.small]#xref:absl/make_optional-02.adoc[_» more..._]#

Creates an `optional<T>` from an initializer list and extra arguments.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename T,
    typename U,
    typename... Args>
constexpr
decltype(std::make_optional<T>(
    std::declval<std::initializer_list<U>>(),
    std::declval<Args>()...))
xref:absl/make_optional-07.adoc[make_optional](
    std::initializer_list<U> il,
    Args&&... args);
----

[.small]#xref:absl/make_optional-07.adoc[_» more..._]#

== Return Value

* An optional holding the forwarded value.
* An optional holding the constructed value.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *value*
| The value to store in the returned optional.
| *args*
| Arguments forwarded to the constructor of `T`.
| *il*
| Initializer list forwarded to the constructor of `T`.
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#