Mike devmug

equivalent / app-model-document.rb

Last active October 29, 2018 07:47

Recursion example in Ruby on Rails model. Recursion will generate array of parents parents

	class Document < ActiveRecord::Base

	belongs_to :parent, class_name: 'Document'

	def self.get_ancestors(who)
	@tree \|\|= []
	# @tree is instance variable of Document class object not document instance object
	# so: Document.get_instance_variable('@tree')

	if who.parent.nil?

mbostock / .block

Last active November 7, 2023 07:54

Collapsible Tree

	license: gpl-3.0
	redirect: https://observablehq.com/@d3/d3-collapsible-tree

yuya-takeyama / binarytree.rb

Created February 5, 2011 14:32

Binary Tree implemented in Ruby.

	module BinaryTree
	class Node
	attr_reader :word, :count, :left, :right

	include Enumerable

	def initialize(word)
	@word, @count = word, 1
	end