PHP: SeekableIterator :: seek ()
If I want to implement seek () to complete the SeekableIterator interface, should I go back to the old position if the position I was looking for is invalid? Like this:
public function seek( $position )
{
$oldPosition = $this->_position;
$this->_position = $position;
if( !$this->valid() )
{
$this->_position = $oldPosition;
throw new OutOfBoundsException( 'Invalid seek position (' . $position . ')' );
}
}
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2 answers
If you are using the reference version of the interface as a guide, then no, you should not "revert" to the original, even if the set target position is invalid.
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