[#BloombergLP-balm-operator_lshift-0ef]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balm.adoc[balm]::operator<<
:relfileprefix: ../../
:mrdocs:

Write a formatted description of the specified `rhs` format spec to the specified `stream`, and return a reference to the modifiable `stream`.

== Synopsis

Declared in `<balm_metricformat.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::ostream&
operator<<(
    std::ostream& stream,
    xref:BloombergLP/balm/MetricFormatSpec.adoc[MetricFormatSpec] const& rhs);
----


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