优先级队列(PriorityQueue)是个很有用的数据结构,很多编程语言都有实现。NodeJs是一个比较新潮的服务器语言,貌似还没有提供相关类。这些天有用到优先级队列,因为时间很充足,闲来无事,就自己实现了一下。代码如下: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 ...
importPQueuefrom'p-queue';importgotfrom'got';constqueue=newPQueue({concurrency:1});(async()=>{awaitqueue.add(()=>got('https://sindresorhus.com'));console.log('Done: sindresorhus.com');})();(async()=>{awaitqueue.add(()=>got('https://avajs.dev'));console.log('Done: avajs.d...
$ node example.js 1. Added 🦄 2. Added 🐴 3. Queue size: 1 4. Pending promises: 1 5. Resolved 🦄 6. Resolved 🐴 7. Queue is empty 8. Pending promises: 0 9. Added 🐙 10. Pending promises: 1 11. Resolved 🐙 12. All work is done ...
257 ```js 258 import delay from 'delay'; 259 import PQueue from 'p-queue'; 260 261 const queue = new PQueue({concurrency: 2}); 262 263 let count = 0; 264 queue.on('active', () => { 265 console.log(`Working on item #${++count}. Size: ${queue.size} Pending...
$ node example.js 1. Added 🦄 2. Added 🐴 3. Queue size: 1 4. Pending promises: 1 5. Resolved 🦄 6. Resolved 🐴 7. Queue is empty 8. Pending promises: 0 9. Added 🐙 10. Pending promises: 1 11. Resolved 🐙 12. All work is done ...
10 10 import dayjs, { Dayjs } from 'dayjs' 11 11 import fs from 'fs-extra' 12 - import pLimit from 'p-limit' 13 12 import md5 from 'md5' 14 13 import FileType from 'file-type' 15 14 import { QBittorrent } from '@cao-mei-you-ren/qbittorrent' ...
如图ArrayBlockingQueue内部有个数组items用来存放队列元素，putindex下标标示入队元素下标，takeIndex是出队...
We refer to this scheme as queue minimizing (QM) joint space-frequency resource allocation (JSFRA) scheme. The proposed solutions are compared to the traditional queue weighted sum rate maximization (Q-WSRM) approaches mentioned above in terms of the rate of convergence and the backlogged packets...
fork()方法主要用于在Node.js中实现多进程。由于Node.js是单线程的,对于CPU密集型任务,使用多进程可以提高性能。fork()方法提供了一种简单的方式来创建新的Node.js进程,这些进程可以并行运行,并通过内置的IPC机制进行通信。 需要注意的是,fork()是Node.js特有的,只在Unix和类Unix系统中可用(如Linux和macOS)。在...
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