Skip to content

Instantly share code, notes, and snippets.

View cmal's full-sized avatar

Yu Zhao cmal

  • Beijing, China
View GitHub Profile
@Quantisan
Quantisan / corr_demo.clj
Created June 26, 2011 00:49
first try using Incanter to analyse stocks data
(ns inc-sandbox.corr-demo
(:require [clojure.set :as set])
(:use (incanter core stats charts io))
(:require [clj-time.core :as time])
(:use (clj-time [format :only (formatter formatters parse)]
[coerce :only (to-long)])))
(defn sym-to-dataset
"returns a dataset read from a local CSV in './data/' given a Yahoo Finance symbol name"
[yf-symbol]
@tilgovi
tilgovi / gist:1227319
Created September 19, 2011 19:20
Node.js call/cc function with fibers
/* This is the call-with-current-continuation found in Scheme and other
* Lisps. It captures the current call context and passes a callback to
* resume it as an argument to the function. Here, I've modified it to fit
* JavaScript and node.js paradigms by making it a method on Function
* objects and using function (err, result) style callbacks.
*/
Function.prototype.callcc = function(context /* args... */) {
var that = this,
caller = Fiber.current,
fiber = Fiber(function () {
@coolaj86
coolaj86 / how-to-publish-to-npm.md
Last active October 29, 2024 21:43
How to publish packages to NPM

Getting Started with NPM (as a developer)

As easy as 1, 2, 3!

Updated:

  • Aug, 08, 2022 update config docs for npm 8+
  • Jul 27, 2021 add private scopes
  • Jul 22, 2021 add dist tags
  • Jun 20, 2021 update for --access=public
  • Sep 07, 2020 update docs for npm version
@greypants
greypants / README.markdown
Last active October 17, 2023 05:49 — forked from reagent/nav_link.rb
RAILS 3: nav_link helper for adding 'selected' class to navigation elements
@lucabrunox
lucabrunox / autotools.nix
Last active December 19, 2018 02:38
Nix pill 10
pkgs: attrs:
with pkgs;
let defaultAttrs = {
builder = "${bash}/bin/bash";
args = [ ./builder.sh ];
setup = ./setup.sh;
baseInputs = [ gnutar gzip gnumake gcc binutils coreutils gawk gnused gnugrep patchelf findutils ];
buildInputs = [];
system = builtins.currentSystem;
};
@jdrew1303
jdrew1303 / readme.md
Last active November 13, 2024 18:56
Market Order Matching Engine

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