FixedLengthQueue

A fixed-length queue with ascending index access.

This module allows one to:

• Add items to the queue using push(item)
• Get items from the queue using get(index)
• Get items in reverse order from the queue using getReverse(index)
• Get the length of the queue using size()

Example

Installing the module:

npm install --save fixedlengthqueue

Importing the module:

const FixedLengthQueue = require('fixedlengthqueue')

A fixed-length queue with length 10 can be constructed using

var fixedLengthQueue = new FixedLengthQueue(10)

Adding items to the queue: Just call the function push(item). Any older items will be overwritten.

for (var i=0; i<50; i++) {
  fixedLengthQueue.push("Item " + i)
}

Getting items from the queue: Just call the function get(index)

for (var i=0; i<fixedLengthQueue.size(); i++) {
  console.log("Item at index " + i + " has content: " + fixedLengthQueue.get(i))
}

Getting items in reverse order from the queue: Just call the function getReverse(index)

for (var i=0; i<fixedLengthQueue.size(); i++) {
  console.log("Item at index " + i + " has content: " + fixedLengthQueue.getReverse(i))
}

Getting the length of the queue: Just call the function size()

console.log("Length of the queue: " + fixedLengthQueue.size())

Output (using above fixed-length 10, pushing 50 items and get() 10 items from index 0 to 9):

Item 40
Item 41
Item 42
Item 43
Item 44
Item 45
Item 46
Item 47
Item 48
Item 49

Output (using above fixed-length 10, pushing 50 items and getReverse() 10 items from index 0 to 9):

Item 49
Item 48
Item 47
Item 46
Item 45
Item 44
Item 43
Item 42
Item 41
Item 40