[#absl-operator_lshift-0b4]
= xref:absl.adoc[absl]::operator<<
:relfileprefix: ../
:mrdocs:

Writes the formatted duration to an output stream.

== Synopsis

Declared in `<absl/time/time.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::ostream&
operator<<(
    std::ostream& os,
    xref:absl/Duration.adoc[Duration] d);
----

== Return Value

A reference to `os`.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *os*
| The output stream to write to.
| *d*
| The duration to write.
|===


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