Append an element to these elements, add it to the indexes
Append elements to these elements, add them to the indexes
Remove one instance of a from these elements
Remove one instance of each element from these elements and indexes
First function to index elements on
Get a list of all elements that match b1 on index 1
Get a MultiSet of all elements that match b1 on index 1
Get a MultiSet of all elements that match on both indexes with b1 and b2
(Changed in version 2.9.0) The behavior of scanRight
has changed. The previous behavior can be reproduced with scanRight.reverse.