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denque
Advanced tools
Package description
The denque npm package is a fast double-ended queue implementation. It is optimized for performance and is useful for situations where you need a queue that allows adding or removing items from both ends.
Adding items
This demonstrates how to add items to the queue. 'push' adds an item to the end of the queue, while 'unshift' adds an item to the beginning.
const Denque = require('denque');
let myQueue = new Denque();
myQueue.push('item1');
myQueue.unshift('item0');
Removing items
This shows how to remove items from the queue. 'pop' removes an item from the end of the queue, and 'shift' removes an item from the beginning.
const removedLast = myQueue.pop();
const removedFirst = myQueue.shift();
Peeking at items
This code sample demonstrates how to peek at items in the queue without removing them. 'peekFront' looks at the first item, and 'peekBack' looks at the last item.
const firstItem = myQueue.peekFront();
const lastItem = myQueue.peekBack();
FastQueue is another high-performance queue implementation. It offers similar functionality to Denque but may have different performance characteristics under certain conditions.
This package also provides a double-ended queue implementation. It is similar to Denque in terms of API and functionality but might have slight differences in performance or additional methods.
Readme
Denque is a well tested, extremely fast and lightweight double-ended queue implementation with zero dependencies and includes TypeScript types.
Double-ended queues can also be used as a:
This implementation is currently the fastest available, even faster than double-ended-queue
, see the benchmarks.
Every queue operation is done at a constant O(1)
- including random access from .peekAt(index)
.
Works on all node versions >= v0.10
Install the package:
npm install denque
Create and consume a queue:
const Denque = require("denque");
const denque = new Denque([1,2,3,4]);
denque.shift(); // 1
denque.pop(); // 4
See the API reference documentation for more examples.
... and many more.
Built and maintained by Invertase.
FAQs
The fastest javascript implementation of a double-ended queue. Used by the official Redis, MongoDB, MariaDB & MySQL libraries for Node.js and many other libraries. Maintains compatability with deque.
The npm package denque receives a total of 7,972,742 weekly downloads. As such, denque popularity was classified as popular.
We found that denque demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
At Node Congress, Socket CEO Feross Aboukhadijeh uncovers the darker aspects of open source, where applications that rely heavily on third-party dependencies can be exploited in supply chain attacks.
Research
Security News
The Socket Research team found this npm package includes code for collecting sensitive developer information, including your operating system username, Git username, and Git email.
Security News
OpenJS is warning of social engineering takeovers targeting open source projects after receiving a credible attempt on the foundation.