[#memusage-DynamicUsage-00]
= xref:memusage.adoc[memusage]::DynamicUsage
:relfileprefix: ../
:mrdocs:

Dynamic memory used by an unordered_map's nodes and bucket array.

== Synopsis

Declared in `<memusage.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename X,
    typename Y,
    typename Z>
static
size_t
DynamicUsage(std::unordered_map<X, Y, Z> const& m);
----

== Return Value

The bytes allocated for the nodes plus the bucket array.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *m*
| The unordered_map to measure.
|===


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