Method Iterator()->`+=()
- Method
`+=
Iterator()
+=steps
- Description
Advance this iterator the specified number of steps and return it. The amount may be negative to move backwards. If the iterator doesn't support backward movement it should throw an exception in that case.
- Note
foreach
calls this function with a step value of1
if _iterator_next() doesn't exist for compatibility with Pike 7.6 and earlier.- Note
foreach
will call this function even when the the iterator has more than one reference. If you want to loop over a copy of the iterator, you can create a copy by adding0
(zero) to it:Iterator iterator; ... foreach(iterator+0; mixed index; mixed value) { ... }
- Note
Even though this function is sufficient for
foreach
to advance the iterator, _iterator_next() is the preferred API.- See also