How to install PhantomJS on Ubuntu

Version: 1.9.8

Platform: x86_64

First, install or update to the latest system software.

sudo apt-get update
sudo apt-get install build-essential chrpath libssl-dev libxft-dev

nontone / blockchain.rb

Last active November 6, 2017 07:42 — forked from chrisallick/blockchain.rb

tiny blockchain in ruby

	# https://medium.com/crypto-currently/lets-build-the-tiniest-blockchain-e70965a248b
	# http://ruby-for-beginners.rubymonstas.org/writing_classes/self.html
	# https://stackoverflow.com/questions/33768598/ruby-sha-256-hexidigest-values-are-different-from-what-python-generates

	require 'rubygems'
	require 'digest'

	class Block
	def initialize(index, timestamp, data, previous_hash)
	@index = index

nontone / ssh-git-config.rb

Last active July 24, 2017 14:00

ssh-git config

nontone / compare-condition-hash.rb

Created April 19, 2017 14:30

if-else or hash

	# if-else
	user = { age: 17, status: 'active' }
	if user[:status] == 'active'
	user[:age] >= 18 ? 'allowed' : 'not allowed'
	else
	user[:age] >= 18 ? 'ok' : 'no'
	end

	# hash
	status = user[:status] == 'active' ? :active : :inactive

nontone / form.js

Last active February 16, 2017 04:51

redux-form: FieldArray

	import React, { Component } from 'react';
	import { FieldArray, reduxForm } from 'redux-form';
	import RenderItem from './render-item';

	class Form extends Component {
	renderItems = ({ fields }) => {
	{
	fields.map((field, i) =>
	<RenderItem
	key={`condition-${i}`}

nontone / polymorph_belongs_to.rb

Last active November 11, 2016 12:03

Polymorphic nested with belongs_to

	class Collection < ActiveRecord::Base
	has_many :collectings
	accepts_nested_attributes_for :collectings, allow_destroy: true
	end

	class Collecting < ActiveRecord::Base
	COLLECTABLE = [:category, :product].freeze

	belongs_to :collection
	belongs_to :collectable, polymorphic: true

nontone / facebook-init.coffee

Last active September 14, 2016 10:52

Rails Facebook login with Facebook Javascript SDK

	# I got this script from turbolinks compatibility
	#
	# reed.github.io/turbolinks-compatibility

	$ ->
	loadFacebookSDK()
	bindFacebookEvents() unless window.fbEventsBound

	bindFacebookEvents = ->
	$(document)

nontone / simplifying_has_many_through.rb

Last active May 15, 2016 22:13 — forked from thomasklemm/simplifying_has_many_through.rb

Simplifying a has_many :through (ActiveRecord / Rails). Also a useful boilerplate sharing complex ActiveRecord scenarios.

	# Run this script with `$ ruby has_much_fun.rb`
	require 'sqlite3'
	require 'active_record'

	# Use `binding.pry` anywhere in this script for easy debugging
	require 'pry'

	# Connect to an in-memory sqlite3 database
	ActiveRecord::Base.establish_connection(
	adapter: 'sqlite3',

nontone / application_controller.rb

Last active August 29, 2015 14:23

Devise sign in for two session

	# controllers/admin/application_controller.rb

	class Admin::ApplicationController < ApplicationController
	before_action :authenticate_admin!

	layout 'admin'
	end

nontone / gist:0ad63511a846369146b1

Created May 8, 2015 07:27

update ssl cert file and fix

	# SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed

	export $SSL_CERT_FILE=/usr/local/etc/openssl/cert.pem
	curl http://curl.haxx.se/ca/cacert.pem -o $SSL_CERT_FILE
	curl http://curl.haxx.se/ca/cacert.pem -o /usr/local/etc/openssl/cert.pem

nontone nontone