[#BloombergLP-balm-MetricId-2constructor-0d]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balm.adoc[balm]::xref:BloombergLP/balm/MetricId.adoc[MetricId]::MetricId
:relfileprefix: ../../../
:mrdocs:

Create a metric id whose value is the specified `metricDescription` address. The behavior is undefined unless `metricDescription` is 0, or the indicated metric description object remains valid for the lifetime of this metric id object.

== Synopsis

Declared in `<balm_metricid.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
MetricId(xref:BloombergLP/balm/MetricDescription.adoc[MetricDescription] const* metricDescription);
----


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