StevenClontz

[system] ~
$ irb
irb(main):001:0> (0..10**4).each do |n|
irb(main):002:1*   p = 2 ** n
irb(main):003:1>   puts p if p.to_s == p.to_s.reverse
irb(main):004:1> end
1
2
4
8

StevenClontz

Capybara

save_and_open_page

Matchers

have_button(locator)

StevenClontz

I've got a beef with Pi "Approximation" Day

March 14 (3.14), often known as Pi Day, is a cute idea. I mean, June 28 would certainly be better, but that's not what this is about.

The chip on my shoulder is the shaft that July 22 (22/7) gets. Pi Approximation Day.

It's an apt description, but it has an odd implication. If 22/7 is a pi approximation, then I guess 3.14 = 157/50 = pi? Yeah okay.

StevenClontz

That was great, wasn't it? I love campfires. There's just something aobut flame that kind of gets you to thinking.

It can be a campfire, or a candle, a lantern... the flame dancing in the air just draws you in, and can make you think.

So what is a flame? It's something we learn very early in our Scouting career. What are the three ingredients for a flame? (ask for help)

Heat, air, and fuel. Without just one of these, the flame cannot survive. If you lack heat, your flame will just go out. Without air, your flame will choke and be snuffed out. Without fuel, your flame will starve and die away.

I keep talking about how I've been here working for this camp for almost a decade. It's important for you all to know why we're doing this. We aren't paid; in fact, we're each paying to be here, giving up our gas, a week of our paychecks, our time lounging by the pool or playing video games or whatever else we'd otherwise be doing.

StevenClontz

module Prob
  @@cache ||= {}
  def probability_of_nonbday day_of_year, number_of_friends
    return @@cache[number_of_friends][day_of_year] if
      @@cache[number_of_friends] && @@cache[number_of_friends][day_of_year]
    @@cache[number_of_friends] ||= {}
    return 0 if day_of_year < 0
    @@cache[number_of_friends][day_of_year] =
      (1-probability_of_nonbday(day_of_year-1,number_of_friends))*
      (364.to_f/365)**(number_of_friends-day_of_year) +

StevenClontz

March Agenda

• Welcome
• Announcements
  • Meetup.com and @AubRUG on Twitter
  • RailsConf
  • RailsBridge ATL by RailsGirls
  • OIT Symposium (Mar 4 tomorrow)
  • AubRUG future meetings
• Talk: Developing Rails in the Cloud (Steven Clontz)

StevenClontz

require 'csv'
require 'pry'
require 'erb'

class Student
  attr_reader :id, :name, :section
  attr_accessor :group1,
                :group2,
                :absences,
                :diagnostic,

StevenClontz

About the speaker

Steven Clontz is a mathematician and software developer from Auburn, Alabama, and co-founder of the startup Teloga, LLC responsible for Teloga.com for Music Organizations (a customer relationship manager). He is currently developing the open-source learning management system ALMS at https://github.com/StevenClontz/alms.

Open-source

All of the tools I use in my work are open-source: this typically means that

StevenClontz

# set colors for prompt
        RED="\[\033[0;31m\]"
     YELLOW="\[\033[1;33m\]"
      GREEN="\[\033[0;32m\]"
       BLUE="\[\033[1;34m\]"
    MAGENTA="\[\033[1;35m\]"
  LIGHT_RED="\[\033[1;31m\]"
LIGHT_GREEN="\[\033[1;32m\]"
      WHITE="\[\033[1;37m\]"
 LIGHT_GRAY="\[\033[0;37m\]"

StevenClontz

MaPP High School Challenge '17

Thank you for your interest in designing a puzzle for Mathematical Puzzle Program's (MaPP) High School Challenge '17 (HSC17)! We provide our mathematical puzzlehunt competition materials to campuses across the country without cost as part of our mission of promoting the fun of mathematical problem solving. Your contributions are what make this possible.

Please read this short document outlining what we need from our volunteer