iansrc0811

# 複雜度 O(n)
input = gets

def fib_dy(n, f = [0, 1])
  if n >= f.length
    for i in f.length..n
     f[i] = f[i-1] + f[i-2]
    end
  end
  return f[n]

iansrc0811

#Session controller provides a token
#/controllers/api/sessions_controller.rb
class Api::SessionsController < Devise::SessionsController
  before_filter :authenticate_user!, :except => [:create]
  before_filter :ensure_params_exist, :except => [:destroy]
  respond_to :json

  def create
    resource = User.find_for_database_authentication(:email => params[:user_login][:email])
    return invalid_login_attempt unless resource

iansrc0811

{
  "clockInCode": { "clockInCode": "MjAxNy0wNi0xNSAwOTozMTowNiArMDgwMA==\n" }
}

iansrc0811

//可以把 閉包( closure) 想成是在函式執行完畢後，
//讓你「記住」並持續存取一個函式 scope (範疇) 的變數 的一種方式
function makeAdder(x) {

    function add(y){
        return y + x;
    } 
    return add;
}

iansrc0811

require 'rubygems'
require 'nokogiri'
require 'mechanize'
require 'open-uri'

class Books_Crawler

  def get_book_names(book_name)
    book_item = self.start_crawler(book_name)
    book_names = []

iansrc0811

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')