vivianwilde/familytree

Build and query complex family trees based on a handful of primitives. Made as a curiosity.

FamilyTree

A very simple system for building and querying familytrees using text.

Run the program

Assuming you have elixir’s iex setup, load the file and run Interaction.main(). That should start a miniature text interface where you can define and query relationships.

Writing

You define relationships with the syntax relationship entity1 entity2, which corresponds to saying that “<entity1> is the <relationship> of <entity2>”. For instance parent a b means “a is the parent of b”, and this information is saved to a directed graph.

Reading

entity1 entity2 gives the relationship between two entities if one can be found on the graph constructed so far. The program simplifies basic relationships, so if you define sibling a b and sibling b c, a c should return sibling since it’s transitive.