[#absl-PairFormatter-02]
= xref:absl.adoc[absl]::PairFormatter
:relfileprefix: ../
:mrdocs:

Formats a `std::pair` by putting a given separator between the pair's `.first` and `.second` members. This formatter allows you to specify custom Formatters for both the first and second member of each pair.

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename FirstFormatter,
    typename SecondFormatter>
/* implementation-defined */::PairFormatterImpl<FirstFormatter, SecondFormatter>
PairFormatter(
    FirstFormatter f1,
    std::string_view sep,
    SecondFormatter f2);
----

== Return Value

A formatter for `std::pair` elements.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *f1*
| The formatter for the pair's `.first` member.
| *sep*
| The separator placed between the two members.
| *f2*
| The formatter for the pair's `.second` member.
|===


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