bobby

(ns user
  (:require [clojure.java.io :as io]
            [datomic.api :as d]))

(defn order-schema []
  (read-string (slurp (io/resource "schema.edn"))))

(defn start-datomic! [uri schema]
  (d/create-database uri)
  (let [conn (d/connect uri)]

quiver

Pub/Sub pattern with PostgreSQL's LISTEN/NOTIFY command

This is a simple chat-like program using pub-sub pattern, backed by PostgreSQL's LISTEN/NOTIFY command.

Publish

publish message to foo channel from user nickname.

$ python pub.py foo nickname
PUBLISH to channel #foo

daveray

Links for essays ref'd in http://blog.fogus.me/2009/03/11/seven-books/

• On the Criteria to Be Used in Decomposing Systems Into Modules – David Parnas
• A Note On Distributed Computing – Jim Waldo, Geoff Wyant, Ann Wollrath, Sam Kendall
• The Next 700 Programming Languages – P. J. Landin
• Can Programming Be Liberated from the von Neumann Style? – John Backus
• Reflections on Trusting Trust – Ken Thompson
• Lisp: Good News, Bad News, How to Win Big – Richard Gabriel
• An Experimental Evaluation of the Assumption of Independence in Multiversion Programming – John Knight and Nancy Leveson
• [Arguments and Results –

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."