Boolean Coercion

to_bool.rb

class Fixnum
  def to_bool
    self == 1
  end
end

def Float
  def to_bool
    self.to_i.to_bool
  end
end

class String
  def to_bool
    !!self.match(/(true|t|yes|y|1)$/i)
  end
end


class NilClass
  def to_bool
    false
  end
end