amalantony

import { createSelector } from "reselect";

const getItems = state => state.products.get("items");

export const getRenderableItems = createSelector([getItems], items => {
  return items;
});

amalantony

app.get('/stream', (req, res) => {
  const pathToVideo = "/path/to/video";
  fs.stat(pathToVideo, function(err, stats) {
      if (err) {
        if (err.code === 'ENOENT') {
          // 404 Error if file not found
          console.log('File not found!');
          return res.sendStatus(404);
        }
        res.end(err);

amalantony

(ns anthology.json
  (:require [clojure.string :as str]))

(def escape-characters
  {\return "\\r"
   \newline "\\n"
   \tab "\\t"
   \\ "\\\\"
   \" "\\\""})

amalantony

(ns anthology.xhtml
  "XML/HTML emitter"
  (:require [clojure.string :as str]))

(defn- yoke [& xs] (apply str (flatten xs)))

(def escape-characters
  {\" """
   \' "'"
   \& "&"

amalantony

/*
  Create an eventEmitter, which has methods "on" and "emit" with the following function signatures.
*/

var EventEmitter = {
    handlers: {}, /* store a list of handler functions against each event */

    /**
    * @param {String} eventName
    * @param {Function} callback

amalantony

Function.prototype.bind = function() {
    var args = Array.prototype.slice.call(arguments);
    var context = args.shift();
    var fn = this;
    return function() {
        fn.apply(context, args.concat(Array.prototype.slice.call(arguments)))
    }
}

amalantony

function exponentialBackoff(url, retries, delay, callback) {
    const success = ping(url); 
    if (success) {
        callback(result); // successfull ping
    } else {
        if (retries > 0) {
            setTimeOut(function() {
                exponentialBackoff(url, --retries, delay * 2, callback);
            }, delay);
        } else {

amalantony

Latency Comparison Numbers
--------------------------
L1 cache reference                            0.5 ns
Branch mispredict                             5   ns
L2 cache reference                            7   ns             14x L1 cache
Mutex lock/unlock                            25   ns
Main memory reference                       100   ns             20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy              3,000   ns
Send 1K bytes over 1 Gbps network        10,000   ns    0.01 ms
Read 4K randomly from SSD*              150,000   ns    0.15 ms