[#BloombergLP-ball-operator_lshift-0e2]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::operator<<
:relfileprefix: ../../
:mrdocs:

Write the value of the specified `container` to the specified output `stream` in a single‐line format, and return a reference to the modifiable stream.

== Synopsis

Declared in `<ball_attributecontainer.h>`

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


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