doubly-linked-list

A doubly linked list implementation in CoffeeScript.

npm install doubly-linked-list
100 downloads in the last week
142 downloads in the last month

build status

DoublyLinkedList

Copyright (c) 2012, Lawrence S. Maccherone, Jr.

A doubly linked list implementation in CoffeeScript.

Credits

Usage

DoublyLinkedList is an implementation of a doubly linked list in CoffeeScript.

Instantiate it empty or with an array.

{DoublyLinkedList} = require('./')
list = new DoublyLinkedList([1, 2, 3])
console.log(list.toString())
# 1,2,3

Push stuff onto the end or unshift stuff onto the beginning.

list.push(4)
list.unshift(0)
console.log(list.toString())
# 0,1,2,3,4

Pop and shift.

last = list.pop()
first = list.shift()
console.log(list.toString())
# 1,2,3
console.log(first, last)
# 0 4

Maybe someday I'll implement a true iterator. In the mean time, you can walk before and after.

current = list.head
while current?
  console.log(current.value)
  current = current.after
# 1
# 2
# 3

Insert before or after.

list.head.after.insertBefore(1.5)
list.tail.before.insertAfter(2.5)    
console.log(list.toString())
# 1,1.5,2,2.5,3

Installation

npm install doubly-linked-list --save

Changelog

  • 0.1.5 - 2012-12-07 - reverted CoffeeScript compile npm postinstall due to TravisCI failure
  • 0.1.4 - 2012-12-07 - fixed dependency problem doing clean npm install
  • 0.1.3 - 2012-12-07 - refactored Cakefile to my latest from Lumenize
  • 0.1.2 - 2012-11-18 - remove() no longer disconnects before and after of removed node
  • 0.1.1 - 2012-11-11 - Simpler toString() and added usage
  • 0.1.0 - 2012-11-11 - Original version

MIT License

Copyright (c) 2012, Lawrence S. Maccherone, Jr.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

npm loves you