Regress this iterator by the specified offset.
Declared in <bdlb_transformiterator.h>
TransformIterator<FUNCTOR, ITERATOR>&
operator-=(difference_type offset);Regress the underlying iterator of this object by the specified (signed) offset, and return a reference providing modifiable access to this object. The behavior is undefined if so regressing the underlying iterator is undefined.
a reference providing modifiable access to this object
| Name | Description |
|---|---|
| offset | signed distance to regress |