= constant-redefinition

Allows you to define constants if not defined on an object and redefine constants without warning.

Define a constant if not defined:

    define_if_not_defined(:A, 1)
  
    assert_equal 1, A
  
Define a constant and redefine it:

    define_if_not_defined(:B, 1)
    redefine_without_warning(:B, 2)
    
    assert_equal 2, B
    
Redefine a constant which should set the constant:    

    redefine_without_warning(:C, 3)
    
    assert_equal 3, C

Define a constant within a module:

    Math.define_if_not_defined(:FOO, 2 * Math::PI)
    
    assert_equal 2 * Math::PI, Math::FOO

Define and redefine a constant within a module:

    Math.define_if_not_defined(:BAR, 3)
    Math.redefine_without_warning(:BAR, 5)

    assert_equal 5, Math::BAR

Redefine a constant within a module which should set the constant:

    Math.redefine_without_warning(:AMAZING, 3)
    
    assert_equal 3, Math::AMAZING
    
All credit is due to this post: http://stackoverflow.com/questions/3375360/how-to-redefine-a-ruby-constant-without-warning

== Contributing to constant-redefinition
 
* Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet
* Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it
* Fork the project
* Start a feature/bugfix branch
* Commit and push until you are happy with your contribution
* Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
* Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.

== Copyright

Copyright (c) 2010 David Czarnecki. See LICENSE.txt for
further details.