Module Memoizable
In: lib/more/facets/memoizable.rb

Memoization is an optimization technique used primarily to speed up programs by having function calls avoid repeating the calculation of results for previously-processed inputs.

When you "memoize" a method/function using Memoizable its results are cached so that later calls return results from the cache instead of recalculating them.

  class T
    include Memoizable

    def initialize(a)
      @a = a
    end

    def a
      "#{@a ^ 3 + 4}"
    end

    memoize :a
  end

  t = T.new(10)
  (t.a.__id__ == t.a.__id__)  #=> true

This method can also be used at the instance level to cache singleton (qua class) methods by including it in the singleton class.

Methods

Classes and Modules

Module Memoizable::Copy

Public Class methods

Public Instance methods

Directive for making your functions faster by trading space for time. When you "memoize" a method/function using memoize its results are cached so that later calls with the same arguments return results from the cache instead of recalculating them.

The memoize method also handles a few options to alter behavior of the memoization:

  :class     => true      cache per-class not per-object
  :freeze    => true      freeze the memoized return values
  :arguments => false     do not index cache by arguments

Remove the memoized value from the memoization cache. The next time a memoized methos is called if will be remomoized.

[Validate]