Mize

Introduction

Memoization is a powerful technique for improving the performance of computationally expensive functions or methods by caching and reusing previously computed results. However, implementing memoization correctly can be tricky, especially when dealing with complex data structures or scenarios where cache invalidation is critical.

Description

The mize library provides a simple and flexible way to memoize methods and functions in Ruby, making it easier for developers to write high-performance code without the need for manual caching implementations. In this README.md, we'll explore how mize can help you optimize your Ruby projects using memoization techniques.

Installation

You can use rubygems to fetch the gem and install it for you:

# gem install mize

You can also put this line into your Gemfile

gem 'mize'

and bundle.

Usage

Memoizes methods, that is the values depend on the receiver, like this:

class A
  @@c = 0

  memoize method:
  def foo(x)
    "foo #{x} #{@@c += 1}"
  end
end

a1 = A.new
a1.foo(23) # => "foo 23 1"
a1.foo(23) # => "foo 23 1"
a2 = A.new
a2.foo(23) # => "foo 23 2"
a2.foo(23) # => "foo 23 2"
a2.mize_cache_clear
a2.foo(23) # => "foo 23 3"
a1.foo(23) # => "foo 23 1"

Memoizes functions, that is the values do not depend on the receiver, like this:

class B
  @@c = 0

  memoize function:
  def foo(x)
    "foo #{x} #{@@c += 1}"
  end
end

b1 = B.new
b1.foo(23) # => "foo 23 1"
b1.foo(23) # => "foo 23 1"
b2 = B.new
b2.foo(23) # => "foo 23 1"
b2.foo(23) # => "foo 23 1"
B.mize_cache_clear
b2.foo(23) # => "foo 23 2"
b1.foo(23) # => "foo 23 2"

Download

The homepage of this library is located at

https://github.com/flori/mize

Author

Florian Frank

License

This software is licensed under MIT license.

flori/mize