:relfileprefix: ../../../
[#boost-urls-ipv4_address-08friend-05]

= xref:boost.adoc[pass:[boost]]::xref:boost/urls.adoc[pass:[urls]]::operator<<



== Synopsis

Declared in header `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/ipv4_address.hpp#L291[boost/url/ipv4_address.hpp,window=blank_]>`

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