array_group_by

array_group_by(array, grouping_key_producer, keyHashFunction) ⇒ Map.<K, Array.<T>>

Kind: global function

Param	Type	Description
array	Array.<T>
grouping_key_producer	function	given an element from input array, returns a grouping key. Can be an object, if it implements .equals method keys can be compared that way as well
keyHashFunction