jaeming

16 followers · 13 following

View GitHub Profile

Recently created

Least recently created

Recently updated

Least recently updated

jaeming / find_prev_tree_node.rb

Last active November 10, 2017 14:32

	class Node
	attr_accessor :parent, :left, :right, :value

	def is_leaf?
	left.nil? && right.nil?
	end

	def has_left_child?
	!left.nil?
	end

jaeming / node.js

Created November 8, 2017 06:37

	const Node = {
	value: null,
	parent: null,
	left: null,
	right: null,
	create: function(props={}) {
	let node = Object.create(this);
	Object.keys(this).forEach( (key)=> {
	node[key] = props[key] \|\| this[key]
	})

jaeming / split.rb

Created October 9, 2016 19:51

split one liner

	def split(str, key)
	(list, word = [], '') and str.chars.to_a.map { \|i\| i == key ? (list << word and word = '') : word << i } and list << word
	end

jaeming / Gemfile

Last active September 26, 2016 20:36

	source "https://rubygems.org"

	gem "minitest"

jaeming / comment_threads.rb

Created February 2, 2016 02:10

	# I was working on a client project not long back and the client expressed an interest in having thread-able comments, where someone can reply to one comment and it starts off a new thread of comments, which could then be branched even further by other replies. It occurred to me that I already had a polymorphic association with my comments so that different resources could be commented on (articles, photos, statuses, etc...). It seemed plausible I could just go ahead and use this on a self-referential basis as well.
	# With polymorphic associations, instead of having a foreign key like, article_id, you have a type column representing the table and an id column for whatever type table that is. For instance:
	:commendable_type => 'Article', :commendable_id => 1
	# Would be comparable to a foreign key reference of
	:article_id => 1
	#thus polymorphic models can be associated with any other model type, including themselves it turns out.
	:commendable_type => 'Comment'
	# Represents a comment that belongs to a comme

jaeming / sudoku_validator.rb

Created November 6, 2015 11:12

sudoku

	def valid?(pattern)
	pattern.map(&:uniq!).map(&:nil?).include?(false) ? false : true
	end

	def validSolution(board)
	rows, columns, grids = board, [], []

	9.times do \|i\|
	column, grid = [], []
	board.map { \|row\| column << row[i] }

jaeming / Abbreviator.rb

Created October 28, 2015 13:44

	class Abbreviator
	def self.abbreviate(s)
	s.split(/\b/).map{\|w\|w.size>3?"#{w[0]}#{w.size-2}#{w[-1]}":w}.join
	end
	end

jaeming / string_of_names_v1.rb

Created October 28, 2015 13:23

	def list names
	name_list = names.map(&:values).flatten
	if name_list.length > 1
	with_ampersand = " & #{name_list.pop}"
	solution = name_list.join(', ') << with_ampersand
	else
	solution = name_list.join
	end
	end

jaeming / plugboard.rb

Created October 28, 2015 13:12

Enigma machine

	class Plugboard

	def initialize(wires = '')
	@wires = wires
	validate unless @wires.empty?
	end

	def validate
	return raise "wire error" unless @wires.is_a?(String)
	return raise "wire error" if @wires.chars.uniq!

jaeming / index.html

Created September 21, 2015 16:42

opal 101 ajax

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>Opal Experiments</title>
	<link rel="stylesheet" href="main.css">
	<script src="https://cdnjs.cloudflare.com/ajax/libs/opal/0.3.43/opal.min.js"></script>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/opal-parser/0.3.43/opal-parser.min.js"></script>
	<script src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/opal-jquery/0.0.8/opal-jquery.min.js"></script>

NewerOlder