[#BloombergLP-ball-UserFields-operator_subs-05]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/UserFields.adoc[UserFields]::operator&lsqb;&rsqb;
:relfileprefix: ../../../
:mrdocs:

Return a reference providing non&hyphen;modifiable access to the value at the specified `index`&period; The behavior is undefined unless `0 &lt;&equals; index &amp;&amp; index &lt; length()`&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/ball/UserFieldValue.adoc[UserFieldValue] const&
operator&lsqb;&rsqb;(int index) const;
----


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