jeffreyiacono

# simulation to calculate an answer to the question:
#
# "If you break a straight line randomly in two places, what is the probability that you can
# form a triangle from the resulting three pieces?"
#
# usage: ruby ./triangles-sim.rb [trials]
# sample output:
#
# $> ruby ./triangles-sim.rb 1000000
#

jeffreyiacono

require 'spec_helper'

describe Track do
  describe "commenters" do
    let(:sleepy)           { build(:user, fullname: 'Mr. Sleepy', email: '[email protected]', username: 'sleepy') }
    let(:dopey)            { build(:user, fullname: 'Mr. Dopey', email: '[email protected]', username: 'dopey') }
    let(:doc)              { build(:user, fullname: 'Mr. Doc', email: '[email protected]', username: 'doc') }
    let(:sleepy_comment)   { build(:comment, commenter: sleepy, content: "sleepy's comment") }
    let(:dopey_comment)    { build(:comment, commenter: dopey, content: "dopey's comment") }
    let(:track)            { build(:track) }

jeffreyiacono

require 'fileutils'
require 'ostruct'
require 'pony'
require 'active_support'

module MakeEmailable
  extend ActiveSupport::Concern

  included do
    attr_reader   :sender, :receiver

jeffreyiacono

require 'spec_helper'

describe Question do
  it { should belong_to(:page)    }
  it { should belong_to(:survey)  }
  it { should have_many(:answers) }

  describe "default scope" do
    let(:first_question)  { Question.create(seq: 1) }
    let(:second_question) { Question.create(seq: 2) }

jeffreyiacono

/**
 * normalizeEvent
 *
 * Firefox does not implement offsetX, OffsetY, so we have to detect for this an
 * manually calculate it ourselves using the pageX, pageY less the event
 * target's left offset and right offset
 *
 * If using a browser that supports offsetX, OffsetY, just return the event,
 * don't need to do anything
 */

jeffreyiacono

class Question < ActiveRecord::Base
  default_scope  order("seq ASC")

  # decrement seq / page # depending on position and page count
  def move_up!
    if self.first_on_page?
      move_to_previous_page!
    else
      decrement_seq! && self.survey.renumber_questions!
    end

jeffreyiacono

CREATE TABLE `ladder` (
  `i` int(1) unsigned NOT NULL,
  PRIMARY KEY (`i`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

INSERT INTO ladder (i) VALUES (0), (1), (2), (3), (4), (5), (6), (7), (8), (9);

SELECT l1.i + l2.i * 10 + l3.i * 100 AS sequence
FROM ladder l1
JOIN ladder l2 ON TRUE

jeffreyiacono

$ cat sample | sort | uniq -c
   2 bat
   4 cat
   2 dog
   1 gator

$ cat sample | sort | uniq -c | sed "s/^[ \t]*//"
2 bat
4 cat
2 dog

jeffreyiacono

-- DATETIME to DATE comparison
SELECT CAST('2012-09-09 23:59:59' AS DATETIME) <= DATE('2012-09-10 00:00:00'); -- TRUE :)
SELECT CAST('2012-09-10 00:00:00' AS DATETIME) <= DATE('2012-09-10 00:00:00'); -- TRUE :)
SELECT CAST('2012-09-10 00:00:00' AS DATETIME) <= DATE('2012-09-10 23:59:59'); -- TRUE :)
SELECT CAST('2012-09-10 00:00:01' AS DATETIME) <= DATE('2012-09-10 23:59:59'); -- FALSE :(

-- and a little more proof:
SELECT CAST('2012-09-10 00:00:00' AS DATETIME) = DATE('2012-09-10 00:00:00'); -- TRUE
SELECT CAST('2012-09-10 00:00:00' AS DATETIME) = DATE('2012-09-10 00:00:01'); -- TRUE
SELECT CAST('2012-09-10 23:59:59' AS DATETIME) = DATE('2012-09-10 23:59:59'); -- FALSE

jeffreyiacono

(M/G)VIM

Open N windows split horizontally / vertically

-o[N]                Open N windows (default: one for each file)
-O[N]                Like -o but split vertically

you can also specify files:

vim -o3 file1.txt file2.txt file3.txt