mauricedb

import { useState } from 'react';

export function useCounter(initial = 0) {
  const [count, setCount] = useState(initial);

  return [count, () => setCount(count + 1)];
}

Lucifier129

var noop = () => {}
var compose = (f1, f2) => (...args) => f1(f2(...args))
var range = (start, end) => {
  let n = start
  let f = (next, complete) => {
    if (n <= end) {
      next(n++)
      f(next, complete)
    } else {
      complete()

TeWu

///
///  Factorial function in lambda calculus - implemented in JS
///

//// Lambda calculus
// zero = λs.λz.z
// succ = λn.λs.λz.s (n s z)
// mult = λn.λm.λs.m (n s)
// pred = λn.λf.λx.n(λg.λh.h (g f))(λu.x)(λu.u)
// minus = λn.λm.m pred n

klein0r

function navigate(nmbrInt, roads, from, to) {
  const getRoad = (from, to, roads) => roads.filter((e) => e.from == from && e.to == to)[0];
  const getIntersections = (roads) => roads.reduce((r, e) => r.concat([e.from, e.to]), []).filter((e, i, a) => a.indexOf(e) === i);
  const permutator = function(inputArr, from, to) {
    var r = [];
    var permute = function(arr, memo) {
      var cur, memo = memo || [];

      for (var i = 0; i < arr.length; i++) {
        cur = arr.splice(i, 1);

PurpleBooth

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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