[#BloombergLP-ball-Category-relevantRuleMask]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/Category.adoc[Category]::relevantRuleMask
:relfileprefix: ../../../
:mrdocs:

Return a reference to the non‐modifiable relevant rule mask for this category. The returned `RuleSet::MaskType` value is a bit‐mask, where each bit is a boolean value indicating whether the rule at the corresponding index (in the rule set of the category manager that owns this category) applies at this category. Note that a rule applies to this category if the rule's pattern matches the name returned by `categoryName`.

== Synopsis

Declared in `<ball_category.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/ball/RuleSet/MaskType.adoc[RuleSet::MaskType]
relevantRuleMask() const;
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