[#BloombergLP-ball-RuleSet-getRuleById]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/RuleSet.adoc[RuleSet]::getRuleById
:relfileprefix: ../../../
:mrdocs:

Return the address of the rule having the specified `id` if such a rule exists, and 0 otherwise. The behavior is undefined unless `0 <= id < maxNumRules()`. Note that rules may be assigned non‐sequential identifiers, and that there may be a valid rule whose identifier is greater than `numRules()` (i.e., valid rules may appear anywhere in the range `0 <= id < maxNumRules()`).

== Synopsis

Declared in `<ball_ruleset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/ball/Rule.adoc[Rule] const*
getRuleById(int id) const;
----


[.small]#Created with https://www.mrdocs.com[MrDocs]#