Taking

A syntactical sugar for Pattern Matching like Elixir.

This is a very rudimentary implementation for testing, and may be expanded upon later as new ideas come up.

Usage

Elixir allows us to pattern match on methods, this allows us to do it using Ruby's one-liner methods and argument forwarding (...):

Point = Struct.new(:x, :y)

def handle_responses(...) = case Taking.from(...)
  in Point[x, 10 => y]
    Point[x, y + 1]
  in 1, 2, 3
    :numbers
  in 'a', 'b'
    :strings
  in :a, :b
    :symbols
  in x: 0, y: 0
    :origin
  in x: 0, y: (10..)
    :north
  else
    false
end

# Array-like

handle_responses(1,2,3)
# => :numbers
handle_responses('a', 'b')
# => :strings
handle_responses(:a, :b)
# => :symbols
handle_responses(:nope?)
# => false

# Hash-like

handle_responses(x: 0, y: 0)
# => :origin
handle_responses(x: 0, y: 15)
# => :north
handle_responses(x: 10, y: 15)
# => :false

# Deconstructable Object

handle_responses(Point[1, 10])
# => Point[1, 11]

Installation

Add this line to your application's Gemfile:

gem 'taking'

And then execute:

$ bundle

Or install it yourself as:

$ gem install taking

Development

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.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/baweaver/taking. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

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

Code of Conduct

Everyone interacting in the Taking project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.