[#beman-optional-optional-03-and_then-02]
= xref:beman.adoc[beman]::xref:beman/optional.adoc[optional]::xref:beman/optional/optional-03.adoc[optional]::and_then
:relfileprefix: ../../../
:mrdocs:

Applies a function to the contained value if there is one.

== Synopses

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

Applies a function to the contained value if there is one.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class F>
constexpr
auto
xref:beman/optional/optional-03/and_then-03.adoc[and_then](F&& f) &;
----

[.small]#xref:beman/optional/optional-03/and_then-03.adoc[_» more..._]#

Applies a function to the contained value if there is one.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class F>
constexpr
auto
xref:beman/optional/optional-03/and_then-0d.adoc[and_then](F&& f) &&;
----

[.small]#xref:beman/optional/optional-03/and_then-0d.adoc[_» more..._]#

Applies a function to the contained value if there is one.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class F>
constexpr
auto
xref:beman/optional/optional-03/and_then-0c.adoc[and_then](F&& f) const &;
----

[.small]#xref:beman/optional/optional-03/and_then-0c.adoc[_» more..._]#

Applies a function to the contained value if there is one.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class F>
constexpr
auto
xref:beman/optional/optional-03/and_then-08.adoc[and_then](F&& f) const &&;
----

[.small]#xref:beman/optional/optional-03/and_then-08.adoc[_» more..._]#

== Return Value

auto

== Template Parameters

[cols="1,4"]
|===
|Name|Description

| *F*
| The type of the invocable
|===

== Parameters

[cols="1,4"]
|===
|Name|Description

| *f*
| The invocable to apply to the contained value
|===


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