davalapar

Introduction

The computer driven markets for instruments like stocks and exchange traded stock options, have transformed finance and the flow of capital. These markets are enabled by order matching engines (and the infrastructure that supports this software). Before computer trading networks and matching engines, stocks where traded on cavernous exchange floors and transaction costs where high. When electronic trading fully matured, floor traders were a fading anachronism and transaction costs had been reduced to pennies a share in many cases. Electronic trading could not exist without advanced network infrastructure, but without the software matching engines no shares would change hands. The computer trading networks, the matching engine software has also created a concentrated nexus of potential failure. Failures in these systems have increased as the frequency and volume on the electronic networks has increased. The position of order matching engines in the trading infrastructure makes these systems o

davalapar

'use strict';

const puppeteer = require('puppeteer');

(async () => {
    /* PRECONDITION:
    0. download ublock, I used https://github.com/gorhill/uBlock/releases/download/1.14.19b5/uBlock0.chromium.zip
    1. run $PATH_TO_CHROME --user-data-dir=/some/empty/directory --load-extension=/location/of/ublock
    2. enable block lists you want to use
    */

davalapar

var os = require("os");

//Create function to get CPU information
function cpuAverage() {

  //Initialise sum of idle and time of cores and fetch CPU info
  var totalIdle = 0, totalTick = 0;
  var cpus = os.cpus();

  //Loop through CPU cores

davalapar

// Async/Await requirements: Latest Chrome/FF browser or Babel: https://babeljs.io/docs/plugins/transform-async-to-generator/
// Fetch requirements: Latest Chrome/FF browser or Github fetch polyfill: https://github.com/github/fetch

// async function
async function fetchAsync () {
  // await response of fetch call
  let response = await fetch('https://api.github.com');
  // only proceed once promise is resolved
  let data = await response.json();
  // only proceed once second promise is resolved

davalapar

var n = new Notification('Connected', { body: 'Well done mate'} );
setTimeout(() => n.close(), 3000);
Notification.permission;
Notification.requestPermission().then(console.log).catch(console.error);

// https://developer.mozilla.org/en-US/docs/Web/API/notification

davalapar

XADD streamname [MAXLEN items] * field value [field value ...]

Adds a set of fields with values to the specified stream. If MAXLEN items are exceeded, items are removed from the beginning of the stream to bring the length down to MAXLEN. The "*" field is to autogenerate an item ID, but can be overriden.

Return value

Simple string reply: epoch time (in milliseconds) followed by a .N (for differentiating multiple events on the same millisecond)

davalapar

var ImgurAPIKey = 'YEAH-IM-NOT-GIVING-THAT';
window.addEventListener('paste', function(e) {
  function eventPreventDefault(e) {
    e.preventDefault();
  }

  function getClipboardData(e) {
    return window.clipboardData || e.clipboardData;
  }

davalapar

console.groupWithTrace = (name, fn) => {
  console.group(name);
  fn();
  console.groupCollapsed();
  console.trace(name);
  console.groupEnd();
  console.groupEnd();
};

function add(x, y) {

davalapar

/*
	Check SSE/AVX support.
	This application can detect the instruction support of
	SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4a, SSE5, and AVX.
*/

#include <iostream>
#ifdef _MSC_VER
#include <intrin.h>
#endif

davalapar

function createUUID() {
    return uuid.v4();
}

// version 4
// createUUID.regex = '^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-4[a-fA-F0-9]{3}-[89abAB][a-fA-F0-9]{3}-[a-fA-F0-9]{12}$';
createUUID.regex = '^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$';

createUUID.is = function (str) {
    return new RegExp(createUUID.regex).test(str);