[#BloombergLP-bdlb-operator_minus-09]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::operator‐
:relfileprefix: ../../
:mrdocs:

Return a copy of the specified `iterator` object with its underlying iterator regressed by the specified (signed) `offset` from that of `iterator`. The behavior is undefined if so regressing the underlying iterator is undefined.

== Synopsis

Declared in `<bdlb_transformiterator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class FUNCTOR,
    class ITERATOR>
xref:BloombergLP/bdlb/TransformIterator.adoc[bdlb::TransformIterator<FUNCTOR, ITERATOR>]
operator‐(
    xref:BloombergLP/bdlb/TransformIterator.adoc[TransformIterator<FUNCTOR, ITERATOR>] const& iterator,
    TransformIterator<FUNCTOR, ITERATOR>::difference_type offset);
----


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