josephchoe

# Today's little useless tidbit converts a url's query string into a hash 
# set of k/v pairs in a way that merges duplicates and massages empty 
# querystring values

def qs_to_hash(query_string)
  keyvals = query_string.split('&').inject({}) do |result, q| 
    k,v = q.split('=')
    if !v.nil?
       result.merge({k => v})
    elsif !result.key?(k)

josephchoe

Testing client side app (like BackboneJS) with Capybara, VCR, webmock, factory girl

josephchoe

require 'base64'

def base64_url_decode(str)
  str += '=' * (4 - str.length.modulo(4))
  Base64.decode64(str.gsub("-", "+").gsub("_", "/"))
end # source: https://github.com/ptarjan/base64url/blob/master/ruby.rb


require 'hmac'
require 'hmac-sha2' ## used to decode facebook return values

josephchoe

# app/serializers/customer_serializer_spec.rb

class CustomerSerializer < ActiveModel::Serializer
  attributes :customer_number, :email, :username

  def customer_number
    object.account_number
  end

  def merchant_id

josephchoe

#!/usr/bin/env bash

rails new --skip-javascript --skip-turbolinks --skip-keeps --skip-git --skip-bundle --skip-test --skip-coffee testing-rails $1

rails new --skip-keeps --skip-git --skip-bundle --skip-test --skip-action-mailer --skip-action-cable testing-rails --api

bundle exec rails new \
  --skip-keeps \
  --skip-git \
  --skip-bundle \

josephchoe

# Original Rails controller and action
class EmployeesController < ApplicationController
  def create
    @employee = Employee.new(employee_params)
    
    if @employee.save
      redirect_to @employee, notice: "Employee #{@employee.name} created"
    else
      render :new
    end

josephchoe

# Original Rails controller and action
class EmployeesController < ApplicationController
  def create
    @employee = Employee.new(employee_params)
    
    if @employee.save
      redirect_to @employee, notice: "Employee #{@employee.name} created"
    else
      render :new
    end

josephchoe

# Created by .ignore support plugin (hsz.mobi)
### JetBrains template
# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839

# User-specific stuff:
.idea/**/workspace.xml
.idea/**/tasks.xml
.idea/dictionaries

josephchoe

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

josephchoe

/*
 * Reference:
 * http://www.quora.com/Computer-Programming/What-are-some-cool-bit-manipulation-tricks-hacks
 * http://www.catonmat.net/blog/low-level-bit-hacks-you-absolutely-must-know/
 */

#include <iostream>
#include <string.h>

using namespace std;