https://github.com/hakanensari/double

Double allows you to use a constant before it is defined when metaprogramming
https://github.com/hakanensari/double

Last synced: 23 days ago
JSON representation

Double allows you to use a constant before it is defined when metaprogramming

• Host: GitHub
• URL: https://github.com/hakanensari/double
• Owner: hakanensari
• License: mit
• Created: 2012-06-15T12:24:59.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2012-06-21T12:47:45.000Z (over 12 years ago)
• Last Synced: 2024-10-09T16:46:10.604Z (about 1 month ago)
• Language: Ruby
• Homepage:
• Size: 150 KB
• Stars: 3
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# Double

[![travis][status]][travis]

## Description

Something can be [familiar, yet foreign at once][uncanny].

**Double** allows you to reference a constant before it is defined—a useful

trick when metaprogramming.

## Usage

A contrived example:

```ruby

class Jekyll

  extend Double

  # Gets/Sets the alter ego of the class.

  #

  # klass - A Class.

  #

  # Returns the Class alter ego.

  def self.alter_ego(klass = nil)

    klass ? @alter_ego = klass : @alter_ego

  end

end

# Open the class and set the alter ego:

class Jeykll

  alter_ego Hyde

end

Jekyll.alter_ego # => #

# But who is this Hyde? Define him:

class Hyde; end

Jekyll.alter_ego # => Hyde

```

[status]: https://secure.travis-ci.org/hakanensari/double.png

[travis]: http://travis-ci.org/hakanensari/double

[uncanny]: http://www-rohan.sdsu.edu/~amtower/uncanny.html