CollectionBase

\Bitrix\Sale\Internals\CollectionBase base class for collection of items. Class implements interfaces \ArrayAccess, \Countable and \IteratorAggregate.

Class methods

Method	Description	Available from version
count	Returns number of object items.
current	Returns current item.
getIterator	Returns external iterator.
isEmpty	Checks if collection empty. When collection doesn't contain items, returns `true` (otherwise, returns `false`).
key	Returns index for current collection item.
next	Moves to the next collection item.
offsetExists	Defines, if specified offset exist (key).
offsetGet	Returns specified offset (key).
offsetSet	Sets value for this offset.
offsetUnset	Resets offset value.
rewind	Rewinds to the first collection item.
valid	Checks, if collection contains valid items.