Tangle

Tangle aims to untangle your graphs, by providing a set of classes for managing different types of graphs, and mixins for adding specific feature sets.

Graph types:

• SimpleGraph
• MultiGraph
• DiGraph
• DAG
• Tree

Feature mixins:

• Filesystem directory graph
• Coloring
• GraphViz

See the changelog for recent changes.

Add this line to your application's Gemfile:

gem 'tangle'

And then execute:

$ bundle

Or install it yourself as:

$ gem install tangle

g=Tangle::SimpleGraph.new
g.add_vertex name: 'a'
g.add_vertex name: 'b'
g.add_edge 'a', 'b'
g.connected?
=> true
g.add_edge 'b', 'b'
=> Tangle::LoopError (loops not allowed)

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.

A mixin is a module with optional submodules for each of the classes Graph, Vertex, and Edge. If the mixin needs initial state it should provide a keyword initializer #initialize_kwarg_KEYWORD(argument), that will be called when the object is #initalized with a matching kwarg.

Example:

module WeightedEdges
	module Edge
		def initialize_kwarg_weight(weight)
			@weight = weight
		end

		def weight
			@weight
		end

		def weight=(new_weight)
			@weight = new_weight
		end
	end
end

Tangle::Graph.new(mixins: [WeightedEdges])

Bug reports and pull requests are welcome on GitHub at https://github.com/notCalle/tangle. Pull requests should be rebased to HEAD of main before submitting, and all commits must be signed with valid GPG key. 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.

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

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