JamieDixon

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<Say voice="alice">Thanks for trying our documentation. Enjoy!</Say>
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JamieDixon

const fn = input => input.match(/(\w)\1+|\w{1}/gm).map(x => [x, x.length]);

JamieDixon

const width = window.innerWidth;
const height = window.innerHeight;

const maxPoints = Math.floor((parseInt(width, 10) + parseInt(height, 10)) / 4);

document.getElementById("app").innerHTML = `
<canvas id="myCanvas" width="${width}px" height="${height}px" />
`;

var c = document.getElementById("myCanvas");

JamieDixon

function sum(...args) {
  function inner(...innerArgs) {
    return sum(...args, ...innerArgs);
  }

  inner.valueOf = () => args.reduce((x, y) => x + y);

  return inner;
}

JamieDixon

 const hasAnyOwnProp = o => {
    
     for(let p in o) {
         return true;
     } 

    return false
 }

 const a = hasAnyOwnProp({ bob: 'bob', sam: 'sam' });

JamieDixon

const Empty = Symbol();
const stateIdentity = 0;

const adjusters = {
    '(': 1,
    ')': -1
}

const getClosingParenPositionRec = (start, str) => {

JamieDixon

List comprehensions

To see a working version of the code check out https://codesandbox.io/s/j497w26383 and open the console.

This file demonstrates a very basic List as an applicative functor for the purpose of demonstrating a simple list comprehension.

The idea for this was taken from: https://egghead.io/lessons/javascript-list-comprehensions-with-applicative-functors by https://twitter.com/drboolean

JamieDixon

const useAutosave = (saveFn, timeout, dependencies) => {
  const isFirstLoad = useRef(true);

  useEffect(() => {
    if (isFirstLoad.current) {
      isFirstLoad.current = false;
      return;
    }

    const timer = setTimeout(saveFn, 1000);

JamieDixon

const sortArrayByList = (fn, arr, order) =>
  arr.sort(
    (item1, item2) =>
      order.indexOf(fn(item1)) > order.indexOf(fn(item2)) ? 1 : -1
  );

const selector = x => x.name;
const arr = [{ name: 'Jamie' }, { name: 'Simon' }, { name: 'Paul' }, { name: 'Stuart' }];
const order = ['Stuart', 'Paul', 'Simon', 'Jamie'];

JamieDixon

const useThrottle = (fn, wait) => {
  const throttledRef = useRef(fn);
  const lastCallRef = useRef({ fn: () => {}, args: null });

  useEffect(
    () => {
      let isThrottling = false;
      throttledRef.current = (...args) => {
        if (isThrottling) {
          lastCallRef.current = {