[#BloombergLP-bslstl-RandomAccessIterator-operator_plus_eq]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/RandomAccessIterator.adoc[RandomAccessIterator]::operator+=
:relfileprefix: ../../../
:mrdocs:

Increment by the specified `offset` number of elements. Return a reference to this modifiable iterator. The behavior is undefined unless the iterator, after incrementing by `offset`, is within the bounds of the underlying sequence.

== Synopsis

Declared in `<bslstl_randomaccessiterator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bslstl/RandomAccessIterator.adoc[RandomAccessIterator<T, ITER_IMP, TAG_TYPE>]&
operator+=(xref:BloombergLP/bslstl/RandomAccessIterator/difference_type.adoc[difference_type] offset);
----


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