ndarville

Business Models

Advertising

Models	Examples
Display ads	Yahoo!
Search ads	Google

baudehlo

Apache James 2.3.2, delivering to a local user, default setup

$ time /usr/libexec/postfix/smtp-source -c -l 5000 -t testuser@localhost -s 100 -m 10000 127.0.0.1:25
10000

real	1m5.751s
user	0m0.630s
sys	0m1.945s

deekayen

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that

nikcub

In August 2007 a hacker found a way to expose the PHP source code on facebook.com. He retrieved two files and then emailed them to me, and I wrote about the issue:

http://techcrunch.com/2007/08/11/facebook-source-code-leaked/

It became a big deal:

http://www.techmeme.com/070812/p1#a070812p1

The two files are index.php (the homepage) and search.php (the search page)

subelsky

# Flatten a transparent image with a white background:
convert -flatten img1.png img1-white.png

# Make an image transparent
convert -transparent '#FFFFFF' nontransparent.gif transparent.png

# convert an image into tiles
convert -size 3200x3200 tile:single_tile.png final.png

# making a montage from a collection of images

swannodette

;; based on core.logic 0.8-alpha2 or core.logic master branch

(ns sudoku
  (:refer-clojure :exclude [==])
  (:use clojure.core.logic))

(defn get-square [rows x y]
  (for [x (range x (+ x 3))
        y (range y (+ y 3))]
    (get-in rows [x y])))

bobby

(ns datomic-helpers
  (:require [datomic.api     :as d]))

;;; Expose Datomic vars here, for convenience

;;; Ring middleware

(defn wrap-datomic
  "A Ring middleware that provides a request-consistent database connection and
  value for the life of a request."

jboner

Latency Comparison Numbers (~2012)
----------------------------------
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        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

stuarthalloway

;; Datomic example code
(use '[datomic.api :only (db q) :as d])

;; ?answer binds a scalar
(q '[:find ?answer :in ?answer]
   42)

;; of course you can bind more than one of anything
(q '[:find ?last ?first :in ?last ?first]
   "Doe" "John")

apendleton

"""
This script ingests a CSV of last names and builds JSON output on the 
percentage of last names that begin with each letter of the alphabet.

I initially ran it on a CSV-ified version of the US Census's list of all last
names with more than 100 occurrences, and used the frequency field within that 
file to weigh the output, but absent that field, it assigns equal weight to 
each name, allowing us to also process our TCamp 2012 attendence list.

Using the script on the Census data available in: