rbishop

Carl Hewitt on Actors

Actor - Fundamental unit of computation, a computation model - not just a form of concurrency

An Actor has three essential elements:

• 1 - Processing - you have to get something done
• 2 - Storage - you have to be able to remember things
• 3 - Communication

rbishop

Generate a new Elixir project using mix and add cowboy and plug as dependencies in mix.exs:

  defp deps do
    [
      {:cowboy, "~> 1.0.0"},
      {:plug, "~> 0.8.1"}
    ]
  end

rbishop

require 'benchmark'
require 'delegate'
require 'forwardable'

class Person
  def initialize(name)
    @name = name
  end

  def name

rbishop

Context

I bought a new Dell U2720Q monitor but the onboard graphics on my 13 inch 2013 MacBook Pro (Catalina) was not powerful enough to drive it at 3840x2160@60Hz. I had been using the Apple Thunderbolt Display prior to this and I really liked how through a single Thunderbolt cable it connected the display, ethernet, and USB devices. I didn't want to buy a new laptop as this one is still powerful enough for my needs of programming and not gaming.

As such, my parameters for an enclosure were that:

• Small form factor. A lot of enclosures such as the Sonnet Breakaway Box and Razer Core X are very large.
• This isn't for gaming so I didn't need a beefy video card or an enclosure with a really high wattage power supply.
• Thunderbolt 3. While my current laptop is Thunderbolt 2 I recognize I won't have it for more than 2-3 more years and will eventually have a Thunderbolt 3 computer.
• Ethernet and USB ports on the enclosure were a plus but not a hard requirement. The idea of having as many of my peripherals

rbishop

Object.prototype.send = function(methodName) {
  args = [].slice.call(arguments);
  args.shift()

  if (this.hasOwnProperty(methodName)) return this[methodName];

  if (args.length > 1) {
    return this[methodName].apply(this, args);
  } else {
    return this[methodName]();  

rbishop

while true
  line_num ||= 1
  ("%03d" % line_num + ' > ').display
  code = gets
  puts eval(code)
  line_num += 1
end

rbishop

# Not tail recursive and uses ++ :(
defmodule Quicksort do
  def sort([]), do: []
  
  def sort([head | rest]) do
    {before, after} = Enum.partition(rest, &(&1 < head))
    sort(before) ++ [head] ++ sort(after)
  end
end

rbishop

module Surprisable
  extend ActiveSupport::Concern

  included do
    attr_accessor :this_aint_gonna_work
  end
end

module Wtfable
  extend ActiveSupport::Concern

rbishop

// Add #main to the second div.container
@media (min-width: 720px) {
  #main {
    margin-top: 50px;
  }
}

rbishop

Rails.cache.fetch :group_id => group.id, :goal_id => self.id do
  Post.find_by_sql(
    "#{Post.where(:attachment_type => 'UserGoalLog').where(Post.arel_table[:attachment_id].in(user_goal_logs.collect(&:id))).to_sql} 
    UNION 
    #{Post.where(:attachment_type => 'UserGoal').where(Post.arel_table[:attachment_id].in(user_goals.collect(&:id))).to_sql}"
  ) 
end