irr

1. General Background and Overview

• Probabilistic Data Structures for Web Analytics and Data Mining : A great overview of the space of probabilistic data structures and how they are used in approximation algorithm implementation.
• Models and Issues in Data Stream Systems
• Philippe Flajolet’s contribution to streaming algorithms : A presentation by Jérémie Lumbroso that visits some of the hostorical perspectives and how it all began with Flajolet
• Approximate Frequency Counts over Data Streams by Gurmeet Singh Manku & Rajeev Motwani : One of the early papers on the subject.
• [Methods for Finding Frequent Items in Data Streams](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.9800&rep

irr

import static com.google.common.io.Closeables.closeQuietly;

import java.io.BufferedWriter;
import java.io.Closeable;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

irr

#include <event.h>
#include <evhttp.h>
#include <pthread.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <iostream>

irr

#include <evhttp.h>

void process_request(struct evhttp_request *req, void *arg){ 
    struct evbuffer *buf = evbuffer_new();
    if (buf == NULL) return;
    evbuffer_add_printf(buf, "Requested: %s\n", evhttp_request_uri(req));
    evhttp_send_reply(req, HTTP_OK, "OK", buf);
}

int main () {

irr

;; http://lispyscript.com
;; LispyScript example using nodejs, expressjs and twitter bootstrap
;; LispyScript templates are written in LispyScript!
;; Html5 templates support all html5 tags

;; The express server

(var express (require "express"))
(var app (express))
(app.listen 3000)

irr

apt-get install lxc
lxc-create -n meh -t debian (takes some time)

echo "none /sys/fs/cgroup/ cgroup      rw,cpuset,cpu,cpuacct,memory,devices,freezer 0 2" >> /etc/fstab
mount -a

lxc-start -n meh -d
lxc-list -n meh
lxc-cgroup -n meh cpu.shares
lxc-cgroup -n meh memory.limit_in_bytes

irr

# cat a.c
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include "zmalloc.h"

void *worker(void *arg) {
    int j;
    char *p;

irr

  var user = {
    validateCredentials: function (username, password) {
      return (
          (!(username += '') || username === '') ? { error: "No Username Given.", field: 'name' }
        : (!(username += '') || password === '') ? { error: "No Password Given.", field: 'pass' }
        : (username.length < 3)                  ? { error: "Username is less than 3 Characters.", field: 'name' }
        : (password.length < 4)                  ? { error: "Password is less than 4 Characters.", field: 'pass' }
        : (!/^([a-z0-9-_]+)$/i.test(username))   ? { error: "Username contains invalid characters.", field: 'name' }
        : false
      );

irr

#!/bin/bash
#
# Startup script for the Supervisor server
#
# Tested with Red Hat Enterprise Linux Server release 5.5
#
# chkconfig: 2345 85 15
# description: Supervisor is a client/server system that allows its users to \
#              monitor and control a number of processes on UNIX-like \
#              operating systems.

irr

%% v6hex.erl:
%% IPv6-address tuple to hex string conversion
%% by Kenji Rikitake
%% MIT license (see the end of this module)

-module(v6hex).

-export([v6hex/1, 
	 v6hex_revarpa/1,
	 v6hex_addr/1,