[#BloombergLP-ball-operator_lshift-0f] = xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::operator<< :relfileprefix: ../../ :mrdocs: Write the value of the specified `attribute` to the specified `output` stream. Return the specified `output` stream. == Synopsis Declared in `<ball_attribute.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- std::ostream& operator<<( std::ostream& output, xref:BloombergLP/ball/Attribute.adoc[Attribute] const& attribute); ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#