class Array
  def to_h
    Hash[*self]
  end
end

['action', 'go', 'id', 6].to_h   # => { 'action' => 'go', 'id' => 6 }

class Array
  def total
    t = 0
    self.each { |v| t += v }
    t
  end
end

[1,2,2,3].total  # => 8

# throw this in one of your controller helpers.
# it works just like a combination of link_to_unless_current and link_to_remote
def link_to_remote_unless_current(name, options = {}, html_options = {}, *parameters_for_method_reference, &block)
  if current_page?(options[:url])
    if block_given?
      block.arity <= 1 ? yield(name) : yield(name, remote_function(options), html_options, *parameters_for_method_reference)
    else
      name
    end
  else
    link_to_function(name, remote_function(options), html_options)
  end
end