patrickdet

sum : Tree Int -> Int
sum tree = 
    case tree of
      Empty -> 0
      Node v left right ->
         v + sum left + sum right

flatten : Tree a -> List a
flatten tree =
    case tree of

patrickdet

Prozess - das laufende Programm

Programm

Erzeugung

• unix: fork, execve
• windows:CreateProcess

Beenden

• unix: exit / kill
• windows: ExitProcess / TerminateProcess

patrickdet

# JSON-encoded error and redirect results for Devise controllers.
# This overrides an internal method of Devise, so be careful when updating Devise!
# 
# Usage:
# 
# class Users::RegistrationsController < Devise::RegistrationsController
#   include DeviseJsonAdapter
# end
#
# devise_for :users, :controllers => { :registrations => "users/registrations" }

patrickdet

41a42
> ;;;###autoload
44a46,48
>   (defun string-join (separator strings)
>     "Join all STRINGS using SEPARATOR."
>     (mapconcat 'identity strings separator))
55a60
> ;;;###autoload
57,59c62,64
<   (if (boundp 'aquamacs-version)

patrickdet

= Ruby Packaging Standard

The aim of this document is two-fold.  First, to specify a common
structure of how a Ruby package distributed as source (that is, but
not limited to, development directories, version-controlled
repositories, .tar.gz, Gems, ...) should conform to.

Second, to document common and proven ways to structure Ruby packages,
and to point out certain anti-patterns that sneaked into common use.
It is by intent not to innovate.

patrickdet

I’m working on both learning authlogic and Rails 3. The process here works (given the Rails 3.0.0.beta1 gem) for me. There is a list of the many resources I complied this from at the bottom of the document.

Travelers beware: this is incomplete, and possibly even wrong. But between the stuff about scaffolding and binary logic’s example app you should be able to get off your feet.

Basic Application

We assume Rails 3 is installed. We will create a rails app as usual.

rails authtest
cd authest
rails g scaffold post title:string body:text
rails g scaffold user username:string fullname:string is_admin:boolean

patrickdet

“A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.”

I think it's from “The moon is a harsh mistress”

patrickdet

# Requires Cramp 0.8+
require 'rubygems'
require 'usher'
require 'cramp/controller'

Cramp::Controller::Websocket.backend = :thin

class WebsockAction < Cramp::Controller::Websocket
  periodic_timer :send_hello_world, :every => 2
  on_data :received_data

patrickdet

require 'open-uri'

# url dsl -- the ultimate url dsl!
#
# You just can't beat this:
#
#   $ irb -r url_dsl
#   >> include URLDSL
#   => Object
#   >> http://github.com/defunkt.json

patrickdet

require 'net/dns/resolver'

# Custom Domain
#
#   Require net-dns gem
#
#   A Rack middleware to to resolve the custom domain to original subdomain 
#   for your multi telent application.
#
#   It's all transperant to your application, it performs cname lookup and