[#absl-DereferenceFormatter-09]
= xref:absl.adoc[absl]::DereferenceFormatter
:relfileprefix: ../
:mrdocs:

`DereferenceFormatter` overloads

== Synopses

Declared in `<absl/strings/str_join.h>`

Function overload of `DereferenceFormatter()` for using a default `AlphaNumFormatter()`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
/* implementation-defined */::DereferenceFormatterImpl</* implementation-defined */::AlphaNumFormatterImpl>
xref:absl/DereferenceFormatter-01.adoc[DereferenceFormatter]();
----

[.small]#xref:absl/DereferenceFormatter-01.adoc[_» more..._]#

Formats its argument by dereferencing it and then applying the given formatter. This formatter is useful for formatting a container of pointer‐to‐T. This pattern often shows up when joining repeated fields in protocol buffers.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename Formatter>
/* implementation-defined */::DereferenceFormatterImpl<Formatter>
xref:absl/DereferenceFormatter-0a.adoc[DereferenceFormatter](Formatter&& f);
----

[.small]#xref:absl/DereferenceFormatter-0a.adoc[_» more..._]#

== Return Value

* A dereferencing formatter using the default formatter.
* A formatter that dereferences each element before formatting it.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *f*
| The formatter applied to the dereferenced element.
|===


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