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import React, { Component } from 'react'; | |
import PropTypes from 'prop-types'; | |
const propTypes = { | |
text: PropTypes.string.isRequired, | |
customClass: PropTypes.string, | |
selectionHandler: PropTypes.func | |
}; | |
/** |
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#include <stdio.h> | |
#include <unistd.h> | |
#include <sys/ioctl.h> | |
#define DIGITS 10 | |
#define LETTERS 26 | |
void nullify(int arr[], int size); | |
void histogram(int arr[], int size, int start, int terminalWidth); | |
int getTermWidth(); |
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let users = [ | |
{ | |
name: { | |
first: 'John', | |
last: 'Galt' | |
}, | |
email: '[email protected]', | |
age: 30 | |
}, | |
{ |
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let users = [ | |
{ | |
name: { | |
first: 'John', | |
last: 'Galt' | |
}, | |
email: '[email protected]', | |
age: 30 | |
}, | |
{ |
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npm init | |
npm install --save-dev @babel/core @babel/node @babel/preset-env | |
npx babel-node index.js --presets=@babel/preset-env |
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<!DOCTYPE html> | |
<html> | |
<head> | |
<style> | |
body { | |
font-family: Tahoma, Geneva, sans-serif; | |
} | |
div { |
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<!DOCTYPE html> | |
<html> | |
<head> | |
<style> | |
body { | |
font-family: Tahoma, Geneva, sans-serif; | |
} | |
div { |
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class PubSubManager { | |
constructor() { | |
this.channels = { | |
weather: { | |
message: '', | |
subscribers: [] | |
}, | |
sports: { | |
message: '', | |
subscribers: [] |
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const WebSocketServer = require('ws').Server; | |
const express = require('express'); | |
const path = require('path'); | |
const server = require('http').createServer(); | |
const PubSubManager = require('./pubsub'); | |
const app = express(); | |
const pubSubManager = new PubSubManager(); | |
app.use(express.static(path.join(__dirname, '/public'))); |