[#boost-urls-operator_lshift-0a]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::operator&lt;&lt;
:relfileprefix: ../../
:mrdocs:


Format the address to an output stream&period;

== Synopsis


Declared in `&lt;https://www.github.com/boostorg/url/blob/develop/include/boost/url/ipv4_address.hpp#L333[boost&sol;url&sol;ipv4&lowbar;address&period;hpp]&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::ostream&
operator&lt;&lt;(
    std::ostream& os,
    xref:boost/urls/ipv4_address.adoc[ipv4&lowbar;address] const& addr);
----

== Description


IPv4 addresses written to output streams        are written in their dotted decimal format&period;

Format the address to an output stream&period;

IPv4 addresses written to output streams    are written in their dotted decimal format&period;



== Parameters


|===
| Name | Description

| *os*
| The output stream&period;


| *addr*
| The address to format&period;


| *os*
| The output stream&period;


| *addr*
| The address to format&period;


|===



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