ruby-hash-patches.rb

# Hash with getters and setters #
#################################
Hash.class_eval do
  def method_missing(m, *a)
    m.to_s =~ /=$/ ? self[$`] = a[0] : a == [] ? self[m.to_s] : super
  end
end
 
hsh = {}
hsh.test1 = "one"
hsh.test2 = "two"
 
hsh # {"test1"=>"one", "test2"=>"two"}
hsh.test1 # "one"


# Recursive hash #
##################
class RecursiveHash < ::Hash
  def initialize
    super { |hash, key| hash[key] = RecursiveHash.new }
  end
end
 
hsh = RecursiveHash.new
hsh[:one][:two][:three] = "no error!"
 
hsh # {:one=>{:two=>{:three=>"no error!"}}}
hsh[:one] # {:two=>{:three=>"no error!"}}
hsh[:one][:two][:three] # "no error!"
hsh[:batman] # {}