[#BloombergLP-balm-MetricId-isValid]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balm.adoc[balm]::xref:BloombergLP/balm/MetricId.adoc[MetricId]::isValid
:relfileprefix: ../../../
:mrdocs:

Return `true` if this metric id object contains the address of a valid `MetricDescription` object, and false `otherwise`. Note that this method is logically equivalent to `0 != description()`.

== Synopsis

Declared in `<balm_metricid.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
isValid() const;
----


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