steevehook

/*
A Tour of Go: page 44
http://tour.golang.org/#44

Exercise: Loops and Functions

As a simple way to play with functions and loops, implement the square root function using Newton's method.

In this case, Newton's method is to approximate Sqrt(x) by picking a starting point z and then repeating: z - (z*z - x) / (2 * z)

steevehook

Install HomeBrew first

brew update
brew tap caskroom/cask
brew install brew-cask

If you get the error "already installed", follow the instructions to unlink it, then install again:

steevehook

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

steevehook

class Counter extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      count: 0,
    };
  }

  increment = () => {
    this.setState(prevState => {

steevehook

import {withRouter} from 'react-router-dom';

class App extends React.Component {
  constructor() {
    super();
    this.state = {path: ''}
  }
  
  componentDidMount() {
    let pathName = this.props.location.pathname;

steevehook

import React from 'react';

import * as My from './components/my-components.js';

export default class App extends React.Component {
  render() {
    return (
      <div>
        <My.Foo />
        <My.Bar />

steevehook

const { Worker, isMainThread,  workerData } = require('worker_threads');

let currentVal = 0;
let intervals = [100,1000, 500]

function counter(id, i){
	console.log("[", id, "]", i)
	return i;
}

steevehook

const { Worker, isMainThread, parentPort, workerData } = require('worker_threads');
const request = require("request");


if(isMainThread) {
	console.log("This is the main thread")

	let w = new Worker(__filename, {workerData: null});
	w.on('message', (msg) => { //A message from the worker!
		console.log("First value is: ", msg.val);

steevehook

const { Worker, isMainThread, parentPort, workerData } = require('worker_threads');
const request = require("request");

function startWorker(path, cb) {
	let w = new Worker(path, {workerData: null});
	w.on('message', (msg) => {
		cb(null, msg)
	})
	w.on('error', cb);
	w.on('exit', (code) => {

steevehook

const {  parentPort } = require('worker_threads');

function random(min, max) {
	return Math.random() * (max - min) + min
}

const sorter = require("./test2-worker");

const start = Date.now()
let bigList = Array(1000000).fill().map( (_) => random(1,10000))