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yocto-queue

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yocto-queue

Tiny queue data structure

    1.0.0latest
    GitHub
    npm

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Maintainers
1
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28,591,994
increased by2.24%

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yocto-queue

Tiny queue data structure

You should use this package instead of an array if you do a lot of Array#push() and Array#shift() on large arrays, since Array#shift() has linear time complexity O(n) while Queue#dequeue() has constant time complexity O(1). That makes a huge difference for large arrays.

A queue is an ordered list of elements where an element is inserted at the end of the queue and is removed from the front of the queue. A queue works based on the first-in, first-out (FIFO) principle.

Install

$ npm install yocto-queue

Usage

import Queue from 'yocto-queue'; const queue = new Queue(); queue.enqueue('🦄'); queue.enqueue('🌈'); console.log(queue.size); //=> 2 console.log(...queue); //=> '🦄 🌈' console.log(queue.dequeue()); //=> '🦄' console.log(queue.dequeue()); //=> '🌈'

API

queue = new Queue()

The instance is an Iterable, which means you can iterate over the queue front to back with a “for…of” loop, or use spreading to convert the queue to an array. Don't do this unless you really need to though, since it's slow.

.enqueue(value)

Add a value to the queue.

.dequeue()

Remove the next value in the queue.

Returns the removed value or undefined if the queue is empty.

.clear()

Clear the queue.

.size

The size of the queue.

  • quick-lru - Simple “Least Recently Used” (LRU) cache

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Last updated on 12 Aug 2021

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