[#absl-FunctionRef-081-2constructor-059]
= xref:absl.adoc[absl]::xref:absl/FunctionRef-081.adoc[FunctionRef<R const(Args...)>]::FunctionRef
:relfileprefix: ../../
:mrdocs:

Constructors

== Synopses

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

Construct from `nontype_t`


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    auto F,
    typename = xref:absl/FunctionRef-081/EnableIfCompatible.adoc[EnableIfCompatible<decltype(F)>]>
xref:absl/FunctionRef-081/2constructor-0f.adoc[FunctionRef](xref:absl/nontype_t.adoc[nontype_t<F>] arg) noexcept;
----

[.small]#xref:absl/FunctionRef-081/2constructor-0f.adoc[_» more..._]#

Construct from `F`


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename F,
    typename = xref:absl/FunctionRef-081/EnableIfCompatible.adoc[EnableIfCompatible<F const&>]>
xref:absl/FunctionRef-081/2constructor-053.adoc[FunctionRef](F const& f) noexcept;
----

[.small]#xref:absl/FunctionRef-081/2constructor-053.adoc[_» more..._]#

Construct from `F`


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename F,
    typename = xref:absl/FunctionRef-081/EnableIfCompatible.adoc[EnableIfCompatible<F&>]>
xref:absl/FunctionRef-081/2constructor-0c.adoc[FunctionRef](F&& f) noexcept;
----

[.small]#xref:absl/FunctionRef-081/2constructor-0c.adoc[_» more..._]#

Construct from `F`


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename F,
    typename = xref:absl/FunctionRef-081/EnableIfCompatible.adoc[EnableIfCompatible<F*>],
    absl::functional_internal::EnableIf<std::is_function_v<F>> = 0>
xref:absl/FunctionRef-081/2constructor-04.adoc[FunctionRef](F* f) noexcept;
----

[.small]#xref:absl/FunctionRef-081/2constructor-04.adoc[_» more..._]#


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    auto F,
    typename Obj,
    typename = xref:absl/FunctionRef-081/EnableIfCompatible.adoc[EnableIfCompatible<decltype(F), Obj*>]>
xref:absl/FunctionRef-081/2constructor-00.adoc[FunctionRef](
    xref:absl/nontype_t.adoc[nontype_t<F>],
    Obj* obj) noexcept;
----

[.small]#xref:absl/FunctionRef-081/2constructor-00.adoc[_» more..._]#


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    auto F,
    typename Obj,
    typename = xref:absl/FunctionRef-081/EnableIfCompatible.adoc[EnableIfCompatible<decltype(F), Obj const*>]>
xref:absl/FunctionRef-081/2constructor-0d.adoc[FunctionRef](
    xref:absl/nontype_t.adoc[nontype_t<F>] arg,
    Obj const* obj) noexcept;
----

[.small]#xref:absl/FunctionRef-081/2constructor-0d.adoc[_» more..._]#


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    auto F,
    typename Obj,
    typename = xref:absl/FunctionRef-081/EnableIfCompatible.adoc[EnableIfCompatible<decltype(F), std::remove_reference_t<Obj>&>],
    absl::functional_internal::EnableIf<! std::is_rvalue_reference_v<Obj &&>> = 0>
xref:absl/FunctionRef-081/2constructor-09.adoc[FunctionRef](
    xref:absl/nontype_t.adoc[nontype_t<F>] arg,
    Obj&& obj) noexcept;
----

[.small]#xref:absl/FunctionRef-081/2constructor-09.adoc[_» more..._]#


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    auto F,
    typename Obj,
    typename = xref:absl/FunctionRef-081/EnableIfCompatible.adoc[EnableIfCompatible<decltype(F), std::remove_reference_t<Obj>&>],
    absl::functional_internal::EnableIf<!std::is_rvalue_reference_v<Obj &&>> = 0>
xref:absl/FunctionRef-081/2constructor-07.adoc[FunctionRef](
    xref:absl/nontype_t.adoc[nontype_t<F>] arg,
    Obj&& obj) noexcept;
----

[.small]#xref:absl/FunctionRef-081/2constructor-07.adoc[_» more..._]#


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