lights FAQ Forum

Data Structures


doubly linked lists

local dlist = require'dlist'

Doubly linked lists in Lua. Doubly linked lists make insert, remove and move operations fast, and access by index slow. In this particular implementation items must be Lua tables for which fields _prev and _next must be reserved for linking.

dlist() -> list
dlist:new() -> list
create a new list
list:clear() clear the list
list:push(t) add an item at end of the list
list:unshift(t) add an item at the beginning of the list
list:insert(t[, after_t]) add an item after another item (or at the end)
list:pop() -> t remove and return the last item, if any
list:shift() -> t remove and return the first item, if any
list:remove(t) -> t remove and return a specific item
list:next([current]) -> t next item after some item (or first item)
list:prev([current]) -> t previous item after some item (or last item)
list:items() -> iterator<item> iterate items
list:reverse_items() -> iterator<item> iterate items in reverse
list:copy() -> new_list copy the list

Last updated: 2 years ago | Edit on GitHub

Pkg type:Lua
Version: r1-9-g09349b9
Last commit:
License: PD
Requires: none
Required by: none