[#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(0x7ff3792c6988), requires_capability(0x7ff36e51f938), requires_capability(0x7ff36d6278e8), requires_capability(0x7ff37e1a3898), requires_capability(0x7ff376300668), requires_capability(0x7ff381782c68), requires_capability(0x7ff3798e3258), requires_capability(0x7ff3818bb908), requires_capability(0x7ff38f9dba48), requires_capability(0x7ff38984b958), requires_capability(0x7ff3799237c8), requires_capability(0x7ff38295f9e8), requires_capability(0x7ff37faf1e58), requires_capability(0x7ff36669b818), requires_capability(0x7ff391031b98)]]
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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