Willem van der Jagt wkjagt

Memoize memoizes function return values based on class name, method name, and arguments. This means that this only works for functions that use state / have side effects.

module Memoize
  def memoize(definition)	
    self.send(:alias_method, "__original_#{definition}", definition)

    define_method definition, Proc.new { |*args|
 @__memo ||= {}

Is this a bad idea?

module Decorate
  def decorate(definition, options)	
		self.send(:alias_method, "__original_#{definition}", definition)
		define_method definition, Proc.new { |*args|
			send(options.fetch(:with), *args, &Proc.new { |args|
				send("__original_#{definition}", *args)
 })

Adds a readable way of expressing percentage calculations.

TL;DR

200 - 15.percent # 170

#How I built an audio book reader for my nearly blind grandfather

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Last year, when visiting my family back home in Holland, I also stopped by my grand-parents. My grand-father, now 93 years old, had always been a very active man. However, during the presceding couple of months, he'd gone almost completely blind and now spent his days sitting in a chair. Trying to think of something for him to do, I suggested he try out audio books. After finally convincing him -- he said audio books were for sad old people -- that listening to a well performed recording is actually a wonderful experience, I realized the problem of this idea.

####The problem with audio devices and the newly blind. After my first impulse to jump up and go buy him an