granolocks

class Object
 def self.sub_constants(prefix = "", namespace=[])
   self.constants.each do |constant|
     constant = constant.to_s
     puts prefix + constant
     #puts eval("#{constant}.methods").inspect
     begin
       next if %w{ Object  Module  Class }.include?(constant) || namespace.include?(constant) 
       b = (namespace.dup) << constant
       eval_string = b.join('::')

granolocks

module Mojule
  def dynamic_method
    if self.class.eql?(Class)
       puts "I am now a class method of #{self.name}"
    else
       puts "I am now an instance method of #{self.class}"
    end
  end
end

granolocks

# Use tshark to grep custom header key value (HEADER_KEY) out of responses from a local rails server
tshark -i eth0 -d tcp.port==3000,http tcp port 3000 -V -R "http.response" | grep HEADER_KEY -B 10 -A 10

granolocks

# Enumerator to loop with
months = (1..12).to_a.reverse.each

# Integer to loop with
year = 1000

# month counts down, then resets through loop
# year goes up to 2014 then ends
until year == 2014 do
  begin

granolocks

# app/helpers/my_model_helper.rb
class MyModelValidator < ActiveModel::Validator

  def validate(mymodel)
     unless mymodel.starts_at.nil? || mymodel.ends_at.nil?
       validate_times(mymodel)
     end
  end

  def validate_times(mymodel)

granolocks

" bind \f to run rspec on current file
:map \f :w\|!rspec %<cr>

" bind \l to run rspec on current line
:map \l :w\|:exe "!rspec % -l " . line('.')<cr>

" bind \w to run rspec on current file
" this one kind of sucks...
:map \w :w\|:exe "!rspec %  -e " . expand("<cword>")<cr>

granolocks

# helps you play twister...
# yup....

class Twister

    def colors
       %w{ red blue yellow green }
    end

    def left_right

granolocks

#!/usr/bin/bash

# counts all lines in all ruby files in a directory
find . -type f -name *.rb -exec cat {} \; | grep -vE "^([[:space:]]+)?\#" | grep -vE "^([[:space:]]+)?$" | wc -l

granolocks

# Simple Serial Listener I have used to listen to Arduino from Ubuntu. 
# That is all.

require "serialport"

#params for serial port
port_str  = "/dev/ttyACM0"  #may be different for on different machines
baud_rate = 9600
data_bits = 8
stop_bits = 1

granolocks

# Ways to execute a shell script in Ruby
# Example Script - Joseph Pecoraro

cmd = "echo 'hi'" # Sample string that can be used

# 1. Kernel#` - commonly called backticks - `cmd` 
# This is like many other languages, including bash, PHP, and Perl
#  Returns the result of the shell command
#  Docs: http://ruby-doc.org/core/classes/Kernel.html#M001111