jdrew1303

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

drmalex07

README

Create a template service file at /etc/systemd/system/secure-tunnel@.service. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target

heiswayi

PHP Style Guide

All rules and guidelines in this document apply to PHP files unless otherwise noted. References to PHP/HTML files can be interpreted as files that primarily contain HTML, but use PHP for templating purposes.

The keywords "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.

Most sections are broken up into two parts:

1. Overview of all rules with a quick example
2. Each rule called out with examples of do's and don'ts

pjb3

select pg_terminate_backend(pid)
from (
  SELECT
      pid
  FROM pg_stat_activity
     WHERE query <> '<insufficient privilege>'
     AND state <> 'idle'
     AND pid <> pg_backend_pid()
     AND query_start < now() - interval '1 minute'
     ORDER BY query_start DESC) t;

mlocati

// License: MIT - https://opensource.org/licenses/MIT
// Author: Michele Locati <michele@locati.it>
// Source: https://gist.github.com/mlocati/7210513
function perc2color(perc) {
	var r, g, b = 0;
	if(perc < 50) {
		r = 255;
		g = Math.round(5.1 * perc);
	}
	else {

barryvdh

<?php
/**
 * A helper file for Laravel 5, to provide autocomplete information to your IDE
 * Generated for Laravel 5.5.13 on 2017-09-28.
 *
 * @author Barry vd. Heuvel <barryvdh@gmail.com>
 * @see https://github.com/barryvdh/laravel-ide-helper
 */
namespace  {
    exit("This file should not be included, only analyzed by your IDE");

baghayi-gist

function convertPersianNumbersToEnglish($number)
{
    $persian = array('۰', '۱', '۲', '۳', '۴', '۵', '۶', '۷', '۸', '۹');
    $num = range(0, 9);
    return (int)str_replace($persian, $num, $number);
}