DiegoSalazar

# A program that takes any single number (max) and returns all the numbers below (max) that is an exact square

def exact_squares(max)
  s = []

  while max > 0
    s << max if is_exact_square? max 
    max -= 1
  end

DiegoSalazar

# A program that takes any single number (max) and returns all the numbers below (max) that are divisible by five or two but not by both five and two.

def mini_fizzbuzz(max)
  s = []
  max.downto 0 do |i|
    s << i if (i % 2 == 0 || i % 5 == 0) && !(i % 2 == 0 && i % 5 == 0)
  end
  s
end

DiegoSalazar

        RED="\[\033[0;31m\]"
     YELLOW="\[\033[0;33m\]"
 	    GREEN="\[\033[0;32m\]"
       BLUE="\[\033[0;34m\]"
  LIGHT_RED="\[\033[1;31m\]"
LIGHT_GREEN="\[\033[1;32m\]"
      WHITE="\[\033[1;37m\]"
 LIGHT_GRAY="\[\033[0;37m\]"
 COLOR_NONE="\[\e[0m\]"

DiegoSalazar

# models

class Genotype < ActiveRecord::Base
  has_many :genotypes_colors
  has_many :colors, through: :genotypes_colors
  
  # to post nested attributes in a form using fields_for
  accepts_nested_attributes_for :genotypes_colors
  # if you're using Rails 3 attr_accessible
  attr_accessible :genotypes_colors_attributes, ...rest of accessible attribs 

DiegoSalazar

trials = 10
seconds = 1
threads = []
start_time = Time.now.to_f

trials.times do |i|
  threads << Thread.new { sleep seconds }
end

threads.each &:join

DiegoSalazar

#!/bin/bash
# quickly add a host to the hosts file

hostname="$1"
ipaddress="$2"
hostsfile="$3"

if [ -z "$ipaddress" ]; then
  ipaddress="127.0.0.1"
fi

DiegoSalazar

def loop_size(node)
  0.tap do |idx|
    begin
      if node.instance_variable_get :@idx
        return idx - node.instance_variable_get(:@idx)
      else
        node.instance_variable_set :@idx, idx
        idx += 1
      end
    end while node = node.next

DiegoSalazar

Rails naming conventions

General Ruby conventions

Class names are CamelCase.

Methods and variables are snake_case.

Methods with a ? suffix will return a boolean.

DiegoSalazar

# install the levenshtein gem first with:
# sudo gem install levenshtein-ffi

require 'levenshtein'

def names_are_close?(s1, s2, tolerance = 1)
  Levenshtein.distance(s1, s2) == tolerance
end

name_pairs = [

DiegoSalazar

Carshow App Tasks

• Back button - Should say "Admin" when logged in.
• Admin > Show Settings > Location Address should allow to enter physical address and location (venue) name.
• Admin > Show Settings > Date & Time is for duration of actual show (day of show).
• Admin > Show Settings > Below "Location Address" add section (not just a field, add a heading for it too) to enter show website address.
• Admin > Show Settings > Judging - when selecting "Closed Judging" it should disable the participant voting options on Participant accounts.
• Admin > Show Settings > Upload Show Logo - should allow to upload image. Most likely for flyer, not logo.
• Admin > Car Classes > Add a Subclass - Does not work.
• Admin > Car Classes > Add a Subclass - Add a description text field for each sub class.