Weak Reference class that allows a referenced object to be garbage-collected.
A WeakRef may be used exactly like the object it references.
Add this line to your application's Gemfile:
gem 'weakref'And then execute:
$ bundle
Or install it yourself as:
$ gem install weakref
foo = Object.new # create a new object instance
p foo.to_s # original's class
foo = WeakRef.new(foo) # reassign foo with WeakRef instance
p foo.to_s # should be same class
GC.start # start the garbage collector
p foo.to_s # should raise exception (recycled)After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/ruby/weakref.