bradtraversy

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kentcdodds

// handy method to create a Higher Order Component out of a
// Render Prop Component (like a Context.Consumer).
// handles, statics, displayName, refs, and value forwarding

function createHOCFromRenderProp({prop, Consumer}) {
  return Component => {
    function Wrapper(props, ref) {
      return (
        <Consumer>
          {value => <Component {...{...props, [prop]: value, ref}} />}

mitjafelicijan

#!/bin/sh

# http://download.redis.io/releases/
# Usage: sh compile-redis-portable.sh

VERSION="4.0.6"

INIT_PATH=`dirname "$0"`
INIT_PATH=`( cd "$INIT_PATH" && pwd )`

acdlite

Demo: Coordinating async React with non-React views

tl;dr I built a demo illustrating what it might look like to add async rendering to Facebook's commenting interface, while ensuring it appears on the screen simultaneous to the server-rendered story.

A key benefit of async rendering is that large updates don't block the main thread; instead, the work is spread out and performed during idle periods using cooperative scheduling.

But once you make something async, you introduce the possibility that things may appear on the screen at separate times. Especially when you're dealing with multiple UI frameworks, as is often the case at Facebook.

How do we solve this with React?

saggiyogesh

• install mongodb on local machine (mongodump & mongorestore) commands are required.
• command dumping

mongodump -h xxx11.mlab.com:11 -u user -p password --authenticationDatabase release-db -d release-db -o /home/dumps

**Options** `-h`: mlab host:port, `-u`: db user, `-p`: db user password, `--authenticationDatabase` `-d`: mlab dbname, `-o`: path to store backupfiles

• restore command, to restore locally

  mongorestore --db dname /home/dumps

Otherwise to restore in mlab, create a new db and replace the options

yaru22

// Use: var tree = new OST(); tree.select(4); tree.insert(key,value)
var OST = function () {
  // Order statistic tree node
  var Node = function (leftChild, key, value, rightChild, parent) {
    return {
      leftChild: (typeof leftChild === "undefined") ? null : 
      leftChild,
      key: (typeof key === "undefined") ? null : key,
      value: (typeof value === "undefined") ? null : value,
      rightChild: (typeof rightChild === "undefined") ? null : 

soheilhy

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

jfromaniello

var WebSocketServer = require('ws').Server;
var wss = new WebSocketServer({port: 8080});

var jwt = require('jsonwebtoken');

/**
The way I like to work with 'ws' is to convert everything to an event if possible.
**/
function toEvent (message) {
  try {

branneman

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

Lukewh

// Create the http handler
var http = require('http');

// Set the http protocol to have 10 sockets
http.globalAgent.maxSockets = 10;