[#bsl-vector-008-operator_subs-02]
= xref:bsl.adoc[bsl]::xref:bsl/vector-008.adoc[vector<Json>]::operator[]
:relfileprefix: ../../
:mrdocs:

Return a reference providing modifiable access to the element at the specified `position` in this vector. The behavior is undefined unless `position < size()`.

== Synopsis

Declared in `<bslstl_vector.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/vectorBase-06a.adoc[reference]
operator[](xref:bsl/vectorBase-06a/size_type.adoc[size_type] position);
----


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