[#absl-FunctionRef-0e3]
= xref:absl.adoc[absl]::FunctionRef
:relfileprefix: ../
:mrdocs:

FunctionRef

== Synopsis

Declared in `<absl/functional/function_ref.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename T>
class FunctionRef;
----

== Description

Dummy class declaration to allow the partial specialization based on function types below.

== Specializations

[cols="1,4"]
|===
| Name| Description
| xref:absl/FunctionRef-081.adoc[`FunctionRef<R const(Args...)>`] 
| FunctionRef
|===


== Deduction Guides

[cols="1,4"]
|===
| Name| Description
| xref:absl/FunctionRef-0c.adoc[`FunctionRef<F>`] 
| Deduces a `FunctionRef` wrapping a function pointer.
| xref:absl/FunctionRef-0e6.adoc[`FunctionRef<std::remove_pointer_t<decltype(Func)>>`] 
| Deduces a `FunctionRef` wrapping a compile‐time known free function.
| xref:absl/FunctionRef-087.adoc[`FunctionRef<M>`] 
| Deduces a `FunctionRef` wrapping a compile‐time known member pointer.
| xref:absl/FunctionRef-07ee.adoc[`FunctionRef<R(Args...)>`] 
| Deduces a `FunctionRef` wrapping a compile‐time known free function bound to an object argument.
| xref:absl/FunctionRef-07e7.adoc[`FunctionRef<std::invoke_result_t<decltype(Func), U&>()>`] 
| Deduces a `FunctionRef` wrapping a compile‐time known member function.
|===



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