[#bsl-vectorBase-06-operator_subs-0b]
= xref:bsl.adoc[bsl]::xref:bsl/vectorBase-06.adoc[vectorBase]::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-06/reference.adoc[vectorBase<VALUE_TYPE>::reference]
operator[](xref:bsl/vectorBase-06/size_type.adoc[size_type] position);
----

== Return Value

modifiable reference to the element at `position`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *position*
| element position or insertion point
|===


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