[#BloombergLP-bdljsn-Json-operator_subs-03]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdljsn.adoc[bdljsn]::xref:BloombergLP/bdljsn/Json.adoc[Json]::operator&lsqb;&rsqb;
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Return a reference providing modifiable access to the element at the specified `index` in the `JsonArray` held by this object&period; The behavior is undefined unless `isArray()` returns true and `index &lt; theArray()&period;size()`&period;

== Synopsis

Declared in `&lt;bdljsn&lowbar;json&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdljsn/Json.adoc[Json]&
operator&lsqb;&rsqb;(std::size&lowbar;t index);
----


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