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

Write a single‐line description of the specified `cache` to `stream`.

== Synopsis

Declared in `<ball_attributecontext.h>`

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

== Description

Write a description of the data members of the specified `cache` to the specified `stream` in some single‐line human readable format, and return the modifiable `stream`.

== Return Value

reference to the modifiable `stream`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *stream*
| output stream
| *cache*
| rule‐evaluation cache to write
|===


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