anewusername1

# Each of the following classes visit the objects, doing something different
# each time.
class CarElementPrintVisitor
  def visit(subject)
    puts "Visiting: %s" % subject.class.to_s
  end
end

class CarElementDoVisitor
  def visit(subject)

anewusername1

class Car < CarElement
  def initialize
    # Here we build an array of objects that will be visited. This can be done
    # after initialize as well; it just needs to be built before calling 'accept'.
    @elements = []
    @elements << Wheel.new("front left")
    @elements << Wheel.new("front right")
    @elements << Wheel.new("back left")
    @elements << Wheel.new("back right")
    @elements << Body.new

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class CarElement
  # force subclasses to override the accept method
  def accept(visitor)
    raise NotImpelementedError.new
  end
end

class Wheel < CarElement
  include Visitable # now we have the 'accept' method

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module Visitable
  # Accept a visitor object. This will be visited, meaning its 'visit' method
  # will be invoked
  def accept(visitor)
    visitor.visit(self)
  end
end

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class Body < CarElement
  include Visitable # now we have the 'accept' method
end

anewusername1

input {
  gelf { type => 'gelf' }
}
output {
  mongodb {
    host => '127.0.0.1'
    database => 'rails_logs'
    collection => "%{facility}"
  }
}

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it "should allow only strings that include the letter 'a'" do
  StringAllower.allowed?('a bed').should == true
  StringAllower.allowed?('my bed').should == false
  StringAllower.allowed?('single bed').should == false
  StringAllower.allowed?('a single bed').should == true
  StringAllower.allowed?('some car').should == true
  StringAllower.allowed?('some motorcycle').should == false
  ....
end

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authorized_human = (is_human == true && is_authorized == true)
invalid_or_errd = (invalid_data == true || error_occurred == true)
if(response && authorized_human && !invalid_or_errd
  # do something insane
end

anewusername1

# the eight element in the fibonacci sequence is 21
n = 8
five_square = Math.sqrt(5)
(((1 + five_square)**n) - ((1 - five_square)**n)) / (2**n * five_square)

anewusername1

alias gb='git branch'
alias gc='git commit -v'
alias gd='git diff'
alias gg='git grep -n'
alias gl='git pull'
alias gm='git merge'
alias gp='git push'
alias gr='git reset'
alias gap='git add -p'
alias gca='git commit -a -v'