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Definitions

General Testing

• TDD Test Driven Development. Write examples before implementation.
• BDD Behaviour-Driven Development is about implementing an application by describing its behavior from the perspective of its stakeholders. (The Rspec Book)
• RSpec (mention alternatives, write a simple hand sewn test)

Testing Terms

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CHEAT SHEETS

$ command line ruby cheat sheets

INSTALL

$ gem install rspec

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Web App Performance

Back End

N+1

  @users = User.all.includes(:profile) # SELECT * from users

Excessive joins/subselects or exta queries

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require 'benchmark'

class Sudoku

  def initialize(board_string)
    @board = create_board(board_string.split(//).map {|str| str.to_i})
    @potentials = (0..9).to_a
  end

  def create_board(num_array)

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Design Process

1. Define the problem.
2. Wireframe.
3. Prototype.
4. Test, gather feedback, refine.

Define the problem

• Talk to people (users, clients, customers, businesspeople).

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Managing Secret Data in Open source Applications

If you're working on an open source project, committing API keys or secrets to your repo is a big no-no. You wouldn't want anyone else making request with your keys, right?

So instead of putting those keys in app/config/initializers set then as environment variables in your shell. Here's an example for a Facebook API key:

export FB_API_KEY=3629346238763284623874623

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// TicTacToe.cpp   
// for CS 141 lab 4
// Password: Brown
// 
#include <iostream>
using namespace std;


//----------------------------------------------------------------------------------
// Display the board.