[#BloombergLP-bslstl-operator_inc-005]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::operator++
:relfileprefix: ../../
:mrdocs:

Advance `iter` to the next element and return its previous value.

== Synopsis

Declared in `<bslstl_randomaccessiterator.h>`

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

== Description

Increment the specified `iter` to next element. Return the previous value of `iter`. The behavior is undefined if, on entry, `iter` has the past‐the‐end value for an iterator of the underlying sequence.

== Return Value

previous value of `iter` before the increment

== Parameters

[cols="1,4"]
|===
| Name| Description
| *iter*
| iterator to advance
| *postfix*
| unused parameter distinguishing the postfix operator
|===


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