[#memusage-IncrementalDynamicUsage-064]
= xref:memusage.adoc[memusage]::IncrementalDynamicUsage
:relfileprefix: ../
:mrdocs:

Dynamic memory used by a single additional map node.

== Synopsis

Declared in `<memusage.h>`

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

== Return Value

The bytes allocated per map node.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *m*
| The map whose key/value types determine the node size.
|===


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