adam-e-trepanier

original post @ https://www.linkedin.com/feed/update/urn:li:activity:6881954451964461056?commentUrn=urn%3Ali%3Acomment%3A%28activity%3A6881954451964461056%2C6882013851898933249%29&replyUrn=urn%3Ali%3Acomment%3A%28activity%3A6881954451964461056%2C6882320295986917376%29

I think there is a lot to unpack here, and it is probably a very long blog post with very descriptive meaning to terms
around system/software design. For more in-depth information, see CQRS Documents by Gregg Young. Also, look 
at Event Modeling from Adam Dymitruk. Both are exceptional.

However, I will try to be concise. CQRS means separating your writes from your reads. In other words, when some 
actor (user, external system, what have you) issues a command (write side) to the system, it is only changing its state. 
The system's internal state is critical here, and the system shouldn't leak the internal structure out (encapsulation and 
information hiding). The Command side does not mean the system doesn't return a typical representation of t

adam-e-trepanier

Public Sub DeleteRowTest()
    Dim i As Long
    Dim LastRow As Long
    Dim Cols As Variant
    Dim LookFor As String
    Dim rng As Range
     
    With Application
         
        .ScreenUpdating = False

adam-e-trepanier

-module(math_functions).
-export([test/0, even/1, odd/1, filter/2, split/1, split2/1]).

test() ->
  true = even(10),
  false = even(11),
  true = odd(11),
  false = odd(10),
  tests_passed.

adam-e-trepanier

require 'spec_helper'

feature "Credential idempotency" do
  # He shouldn't be describing it anyway, but you
  # could write the nice little stuff here
  
  scenario "Editing authorization information of a credential increments the version" do
    prev_version = obj.credential_version
    
    obj.modify_encrypted_data # A real Domain model or moved to a page object

adam-e-trepanier

def set_json_headers
  request.env['HTTP_ACCEPT'] = 'application/json, text/javascript, *'
  request.env['CONTENT_TYPE'] = 'application/json'
end

adam-e-trepanier

# controller code for /foo/1

before_filter do |controller|
  controller.some_verification(params[:id])
end

# controller code for /foo/1/bar/1

before_filter do |controller|
  controller.some_verification(params[:foo_id])

adam-e-trepanier

module Kernel
  # Returns the object's singleton class.
  def singleton_class
    class << self
      self
    end
  end unless respond_to?(:singleton_class) # exists in 1.9.2

  # class_eval on an object acts like singleton_class.class_eval.
  def class_eval(*args, &block)

adam-e-trepanier

Spork.each_run do
  # This code will be run each time you run your specs.
  AppName::Application.reload_routes!
  Factory.factories.clear
  Dir.glob("#{::Rails.root}/spec/factories/*.rb").each { |file| load "#{file}" }
end

adam-e-trepanier

{\"beverage\":
  {
    \"approved\":null,
    \"created_at\":\"2011-07-11T13:24:08Z\",
    \"description\":\"The king of beers\",
    \"id\":1,
    \"name\":\"Bud Light\",
    \"producer\":\"Anheuser-Busch\",
    \"updated_at\":\"2011-07-11T13:24:08Z\"
  }

adam-e-trepanier

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