mischa

  
#app/views/users/index.rb
<% @users.each do |user| %>

      <%= link_to user, user %>

<% end %>

# app/models/user.rb
def to_s

mischa

 def link_to(*args, &block)
        if block_given?
          options      = args.first || {}
          html_options = args.second
          concat(link_to(capture(&block), options, html_options))
        else
          name         = args.first
          options      = args.second || {}
          html_options = args.third

mischa

  # Any Model
  def to_s
    name
  end
  
  def to_param
    "#{id}-#{to_s.parameterize}"    
  end

mischa

# CLOSURES IN RUBY     Paul Cantrell    http://innig.net
# Email: username "cantrell", domain name "pobox.com"

# I recommend executing this file, then reading it alongside its output.
#
# Alteratively, you can give yourself a sort of Ruby test by deleting all the comments,
# then trying to guess the output of the code!

# A closure is a block of code which meets three criteria:
# 

mischa

(define-struct time (hours minutes seconds))

(define (time-point hours minutes seconds)
  (make-time hours minutes seconds))

(define (time-diff t1 t2)
  (cond
    [(> (seconds t1) (seconds t2)) ((- one-day (seconds t1)) + (seconds t2))]
    [else (- (seconds t2) (seconds t1))])) 

mischa

class MischaTime < Struct.new(:hours, :minutes, :seconds); end

def time_diff(t1, t2)
  if seconds(t1) > seconds(t2)
    (one_day - t1.seconds) + seconds(t2)
  else 
    seconds(t2) - seconds(t1)
  end
end

mischa

require 'rubygems'
require 'stemmer'
require 'classifier'

class LedeClassifier
  
  attr :classifier

  def initialize(sections, n)
    @classifier = Classifier::Bayes.new(*sections)

mischa

# 
#          Why setting the default value of a Hash to be a Hash is wrong 
#  
# When I initialize a hash, setting the default value to be another hash, 
# I am not able to set the value of the hash within the hash
#  
#  h = Hash.new({})
#
#  h['bar']['baz] = 'foo'  # Try to set the value of baz
#

mischa

# Inject
%w{earl-grey peach white}.inject({}) do |hash, string| 
  hash[string] = "tea"
  hash
end

=> {"white"=>"tea", "earl-grey"=>"tea", "peach"=>"tea"}

# Each with object
>> %w{earl-grey peach white}.each_with_object({}){|string, hash| hash[string] = "tea"}

mischa

#features/steps/users_steps.rb:

Given "I'm a logged in member" do
  @me = create_adult
  logged_in_as @me
end

#features/support/env.rb:

class Cucumber::Rails::World