jeppenejsum

trait PaymentComponent {
  val paymentService: PaymentService
  trait PaymentService {def pay(what: String) }
}

trait PaypalPaymentService  extends PaymentComponent {
  override val paymentService:PaymentService = new PaypalImpl 
  class PaypalImpl extends PaymentService {
      def pay(what: String) = println("Paypal payment for "+what)
  }

joshwand

ganked from unreadable scribd doc here: http://cleancoder.posterous.com/what-killed-waterfall-could-kill-agile

What Killed Waterfall could Kill Agile.

Robert C. Martin
20 Nov, 2010

In 1970 a software engineer named Dr. Winston W. Royce wrote a seminal paper entitled Managing the Development of Large Software Systems. This paper described the software process that Royce felt was appropriate for large-scale systems. As a designer for the Aerospace industry, he was uniquely qualified.

He began the paper by setting up a straw-man process to knock down. He described this naïve process as “grandiose”. He depicted it with a simple diagram on an early page of his paper. Then the paper methodically tears this “grandiose” process apart. In the end, Royce proposed a far more nuanced and insightful approach, leaving the reader to giggle at the silliness of the “grandiose” model.

teamon

import unfiltered.jetty._
import unfiltered.request._
import unfiltered.response._
import unfiltered.filter._
import unfiltered.Cookie

trait AuthService[T]{
    def auth(username: String, password: String): Option[T]
}

webstandardcss

---
# ^^^ YAML documents must begin with the document separator "---"
#
#### Example docblock, I like to put a descriptive comment at the top of my
#### playbooks.
#
#  Overview: Playbook to bootstrap a new host for configuration management.
#  Applies to: production
#  Description:
#  Ensures that a host is configured for management with Ansible.