then_alias

This gem implements the #then alias for Object#yield_self that is coming in Ruby 2.6.

To add the #yield_self method to versions of Ruby prior to 2.5, see the yield_self gem.

#then is equivalent to #yield_self, yielding the receiver but returning the result of the block:

42.yield_self { |num| num.to_s } #=> "42"
42.then { |num| num.to_s } #=> "42"

Add this line to your application's Gemfile:

gem 'then_alias'

And then execute:

$ bundle

Or install it yourself as:

$ gem install then_alias

The above just defines a ThenAlias module that can add the #then alias to a module.

class MyClass
  include ThenAlias
end

To include the ThenAlias module in Object and make the alias available everywhere use:

gem 'then_alias', require: 'then_alias/everywhere'

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec 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/tjwp/then_alias.

The gem is available as open source under the terms of the MIT License.