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/##
Copyright 2021 Kyle Gunger
Dual licenced under the CDDL 1.0 and BSD 3-Clause licences.
This file may only be used in accordance with one of the two
licences. You should have recieved a copy of each licence with
the source code. In the event that you did not recieve a copy
of the licences, they may be found at the following URLs:
CDDL 1.0:
https://opensource.org/licenses/CDDL-1.0
BSD 3-Clause:
https://opensource.org/licenses/BSD-3-Clause
THIS SOFTWARE/SOURCE CODE IS PROVIDED "AS IS" WITH NO
WARRENTY, GUARANTEE, OR CLAIM OF FITNESS FOR ANY PURPOSE
EXPRESS OR IMPLIED
#/
# Interface for moving through a list
/; interface ForwardsIterator (type T)
# Advance to the next element in the list
/; next [bool]
;/
# Get the current element in the list
/; current [T]
;/
;/
# Interface for moving through a list forwards or backwards
/; interface TwoWayIterator (type T) extends ForwardsIterator(T)
# Move to the previous element in the list
/; prev [bool]
;/
;/
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