gnab

macro random {
    case { _ ($expr:expr (,) ...) } => {
        var matches = match.patternEnv.$expr.match;
        var randomIndex = Math.floor(Math.random() * matches.length);
        var randomMatch = matches[randomIndex].match;
        return randomMatch
    }
}
 
random(console.log(1), console.log(2), console.log(3))

gnab

require('harp').server(__dirname + '/public', { port: process.env.PORT || 5000 });

var marked = require('./node_modules/harp/node_modules/terraform/node_modules/marked');
var highlight = require('highlight.js');

marked.setOptions({
  langPrefix: '',
  highlight: function (code, language) {
    if (language) {
      return highlight.highlight(language, code).value;

gnab

function* fib () {
  var [a, b, n] = [1, 1, 1]; 

  while (true) {
    yield [a, n]; 
    [a, b, n] = [b, a + b, n + 1]; 
  }
}

for (let [n, i] of fib()) {

gnab

var [first, second, ...rest] = [1, 2, 3, 4, 5]; 

console.log('first =', first);
console.log('second =', second);
console.log('rest =', rest);
// => first = 1
// => second = 2
// => rest = [3, 4, 5]

function printPoint({x: x, y: y}) {

gnab

function sum (...args) {
  return args.reduce((a, b) => a + b, 0); 
}

var nums = [1,2,3];

// ES5
console.log('sum.apply(null, nums) =', sum.apply(null, nums));
// => sum.apply(null, nums) = 6

gnab

var nums = [1, 2, 3]; 

for (var i in nums) {
  setTimeout(() => {
    console.log('var i =', nums[i]);
  }, 1000 * i); 
}

for (let i in nums) {
  setTimeout(() => {

gnab

ko.bindingHandlers.number = {
    update: function (element, valueAccessor, allBindings, viewModel, bindingContext) {
        var value = ko.unwrap(valueAccessor());
        valueAccessor = function () {
            return value.toString().replace('.', ',');
        };
        ko.bindingHandlers.text.update(element, valueAccessor, allBindings, viewModel, bindingContext);
    }
};

gnab

define('itemFactory', function () {
    function Item() {
        this.value = Math.ceil(Math.random() * 1000);
    };
    
    return Item;
});

define('firstView', ['factory!itemFactory'], function (item) {
    console.log('First view; ' + JSON.stringify(item));

gnab

(defn FizzBuzz
  "Returns 'Fizz', 'Buzz' or 'FizzBuzz' if n is divisible by
  3, 5 or both, respectively, or else just n."
  [n]
  (condp #(zero? (mod %2 %1)) n
    15 "FizzBuzz"
     3 "Fizz"
     5 "Buzz"
       (str n)))

gnab

function whenCacheInSync(callback) {
  // 1. Checking
  var onChecking = function () {
    window.applicationCache.removeEventListener('checking', onChecking);

    window.applicationCache.addEventListener('noupdate', onNoUpdate);
    window.applicationCache.addEventListener('downloading', onDownloading);
  };

  // 1A. No updates, load app