yukas

class Vertice
  attr_accessor :predecessor, :d, :name
  def initialize(n)
    @name = n
  end
end

class Edge
  attr_accessor :source, :destination, :w
  def initialize(s,d,w)

yukas

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')