Just toying with some trees / repository fun

tree_example.rb

# So say you want to deal with a tree structure in ruby

tree_data = [
  { name: 'root', childen: [
    { name: 'first' },
    { name: 'second' }
  ]
]

# That pretty much covers it.  I would expect you'd want it to be wrapped in some kind of helper class
# for accessing it in a more pleasant way, so...

class Tree
  attr_reader :data
  def initialize(data)
    @data = data
  end

  def root
    Node.new(data[0], self, nil)
  end

  class Node
    attr_reader :data, :tree, :parent
    def initialize(data, tree, parent)
      @data  = data
      @tree  = tree
      @parent = parent
    end

    def children
      data[:children].map{|c| Node.new(c, tree, self) }
    end

    def siblings
      parent ? parent.children : []
    end
  end
end