CrazyHash.rb

class CrazyHash < Hash
  def initialize init_hash
    super.merge! init_hash
  end

  def to_s
    "do something different and important so the literal {} wont work"
  end
end

f = CrazyHash.new( :b => "C" )

puts f.inspect
=> {:b=>"C"}

Uhm yeah - rubyists use hashes for named arguments all the time but in this gist it is not the point ;)