DiegoSalazar

# testing out class variables are shared between instances
require 'thread'

class A
  @m = Mutex.new
  @@m = Mutex.new
  M = Mutex.new

  def self.m; @m end
  def self.mm; @@m end

DiegoSalazar

# I iterate over ints using inject and pass in an accumulator
# which for the purposes of summing will have to be 0
# each number is added to the accumulator and the final result
# is returned
def sum(ints)
  ints.inject(0) { |sum, i| sum += i }
end

# this was fun, I sort and mutate the ints array to maintain its
# newly sorted state, pop off the last value which will now be

DiegoSalazar

# using string interpolation
def hello(name)
  "Hello, #{name}"
end

# I first check if the first letter is alphabetical
# then see if the first lower case letter is a vowel
# and return the opposite of that boolean
def starts_with_consonant?(s)
  return false unless s[/^[a-z]/i]

DiegoSalazar

class BookInStock
  # declare setters and getters
  attr_accessor :isbn, :price

  def initialize(isbn, price)
    # checking for empty string or price is greater 0, raises exception
    raise ArgumentError if isbn.strip.empty? || price <= 0
    @isbn, @price = isbn, price
  end

DiegoSalazar

def for_each(items, do_this, options = { else: -> {} })
  unless items.empty?
    items.each &do_this
  else
    options[:else].call
  end
end

items = [1,2,3]
for_each items, ->(i) {

DiegoSalazar

#!/bin/bash

SECRET_KEY=$TEST_SENDER_KEY
ACCESS_ID=$TEST_SENDER_TOKEN
API_BASE=$TEST_ENDPOINT_BASE

query="{\"document\":{\"recipient_id\":\"$TEST_RECIPIENT_TOKEN\",\"data\":{\"id\":\"1\",\"first_name\":\"Bill\"}}}"

content_md5=$(echo -n $query | openssl md5 -binary | base64)
content_type='application/json'

DiegoSalazar

a = { a: 1, b: { c: 2, d: { e: 3 }}}

# define a recursive proc:
flatten_keys = -> (h, prefix = "") do
  @flattened_keys ||= {}
  h.each do |key, value|
    # Here we check if there's "sub documents" by asking if the value is a Hash
    # we also pass in the name of the current prefix and key and append a . to it
    if value.is_a? Hash
      flatten_keys.call value, "#{prefix}#{key}."

DiegoSalazar

#!/usr/bin/env ruby

# from the command line run:
# ruby ./find_hotspots.rb FILE_NAME THRESHOLD

class Array
  def to_ranges
    compact.sort.uniq.inject([]) do |r,x|
      r.empty? || r.last.last.succ != x ? r << (x..x) : r[0..-2] << (r.last.first..x)
    end

DiegoSalazar

$.fn.hideWhenNoScrollBars = function() {
  return this.each(function() {
    var el = $(this),
        target = $(el.data('target'));

    function hideWhenNoScrollbars(target, el) {
      if (target.scrollHeight > target.clientHeight) { // has vertical scrollbars
        el.show();
      } else {
        el.hide();

DiegoSalazar

0     5     10    15    20
|-----|-----|-----|-----|
s-e---s--e--s-e---s----es

Intervals of 5 minutes
job start = s
job end = e

s should always correspond to a |