Class: Object

Inherits:
BasicObject
Defined in:
lib/rhr/core_ext/object.rb

Instance Method Summary collapse

Instance Method Details

#cmemoize(*method_names) ⇒ Object

Memoize class methods



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# File 'lib/rhr/core_ext/object.rb', line 21

def cmemoize(*method_names)
  (class << self; self; end).class_eval do
    memoize(*method_names)
  end
end

#memoize(*names) ⇒ Object 



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# File 'lib/rhr/core_ext/object.rb', line 2

def memoize(*names)
  names.each do |name|
    unmemoized = "__unmemoized_#{name}"
    class_eval %{
      alias   :#{unmemoized} :#{name}
      private :#{unmemoized}
      def #{name}(*args)
        cache = (@#{unmemoized} ||= {})
        if cache.has_key?(args)
          cache[args]
        else
          cache[args] = send(:#{unmemoized}, *args).freeze
        end
      end
    }
  end
end