jimweirich

# Suppose you were designing a library named "Zippo".
# How would you organize the exceptions thrown by the library.

# Option 1
# All library errors inheriting from a common base

module Zippo
  class ZippoError < StandardError; end
  class ZippoArgumentError < ZippoError; end
  class ZippoTypeError < ZippoError; end

dbi

<!-- A scaffolded edit view converted to mustache -->

<h1>Editing post</h1>

{{#form}}
  {{#errors?}}
    <div id="error_explanation">
      <h2>{{error_header}}</h2>
    </div>
    <ul>

ryanb

Railties 3.1 RC4

• The new rake task assets:clean removes precompiled assets. [fxn]

• Application and plugin generation run bundle install unless --skip-gemfile or --skip-bundle. [fxn]

• Fixed database tasks for jdbc* adapters #jruby [Rashmi Yadav]

• Template generation for jdbcpostgresql #jruby [Vishnu Atrai]

Gregg

Screencasting Framework

The following document is a written account of the Code School screencasting framework. It should be used as a reference of the accompanying screencast on the topic.

Why you should care about screencasting?

You're probably aren't going to take the time to read this document if you're not interested, but there are a lot of nice side effects caused by learning how to create quality screencasts.

1. Communicating more effectively - At Envy Labs we produce screencasts for our clients all the time. Whether it's demoing a new feature or for a presentation for an invester, they're often much more effective and pleasent than a phone call or screen sharing.

cdcarter

class FormHelper
    attr_accessor :form
    
    def initialize(nsform=nil)
        @form = nsform
    end
    
    def length
        form.numberOfRows
    end

dhh

# autoload concerns
module YourApp
  class Application < Rails::Application
    config.autoload_paths += %W(
      #{config.root}/app/controllers/concerns
      #{config.root}/app/models/concerns
    )
  end
end

nevans

#!/usr/bin/env ruby

module TopLevel
  CONST_D = :d_from_top_level
  module MiddleLevel
    class BottomLevel
      CONST_A = :foo
      CONST_B = :bar
      CONST_C = :c_from_bottom_level

reagent

class Credential
  include ActiveModel::Validations

  attr_accessor :screen_name, :oauth_token, :oauth_secret, :token, :description

  validates_presence_of :screen_name, :oauth_token, :oauth_secret, :message => 'required'
  validate :user_exists, :unless => :errors?

  def initialize(attributes = {})
    attributes.each {|k, v| set_recognized_attribute(k, v) }

tenderlove

###
# This is a JSON building library.  It allows you to build data structures
# to dump as JSON.  Here is a sample of how to use it:
#
# def person_hash(person)
#   {
#     'name'    => person.name,
#     'age'     => person.age,
#     'friends' => person.friends.map { |x| person_hash x }
#   }

unders

# autoload concerns
module YourApp
  class Application < Rails::Application
    config.autoload_paths += %W(
      #{config.root}/app/controllers/concerns
      #{config.root}/app/models/concerns
    )
  end
end