[#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&hyphen;modifiable relevant rule mask for this category&period; The returned `RuleSet&colon;&colon;MaskType` value is a bit&hyphen;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&period; Note that a rule applies to this category if the rule&apos;s pattern matches the name returned by `categoryName`&period;

== Synopsis

Declared in `&lt;ball&lowbar;category&period;h&gt;`

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


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