[#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(0x7f9508970258), requires_capability(0x7f950e39ca48), requires_capability(0x7f950e923288), requires_capability(0x7f950a22b678), requires_capability(0x7f950226e538), requires_capability(0x7f9526845518), requires_capability(0x7f95213a4ae8), requires_capability(0x7f95259f2e98), requires_capability(0x7f950f0fe6c8), requires_capability(0x7f952311ece8), requires_capability(0x7f951ec04798), requires_capability(0x7f94f97240f8), requires_capability(0x7f951c5a1d08), requires_capability(0x7f9521097fe8), requires_capability(0x7f9510d40b38)]]
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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