[#ReachableNets-Contains-01]
= xref:ReachableNets.adoc[ReachableNets]::Contains
:relfileprefix: ../
:mrdocs:

Check whether the network of an address is currently reachable.

== Synopsis

Declared in `<netbase.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard, requires_capability(0x7f2e3b6cb8d8), requires_capability(0x7f2e2a4e7598), requires_capability(0x7f2e283bb2a8), requires_capability(0x7f2e2226d028), requires_capability(0x7f2e261196a8), requires_capability(0x7f2e426904f8), requires_capability(0x7f2e20fbea08), requires_capability(0x7f2e29137a48), requires_capability(0x7f2e417144d8), requires_capability(0x7f2e409b8208), requires_capability(0x7f2e18117358), requires_capability(0x7f2e3674fea8), requires_capability(0x7f2e33b87c08), requires_capability(0x7f2e12856698), requires_capability(0x7f2e29e25a78)]]
bool
Contains(xref:CNetAddr.adoc[CNetAddr] const& addr) const;
----

== Return Value

True when the address's network is reachable.

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *addr*
| The address whose network is tested.
|===


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