jgn

require 'erb'

When /\A\(erb\) (.*)\z/ do |*matches|
  s = ERB.new(matches[0]).result(binding)
  if matches.size > 1
    s = <<-MULTI
    #{s}
    """
    #{ERB.new(matches[1]).result(binding)}
    """

jgn

Stuff I learned about Puppet

Chef vs Puppet

• My blink is that in 2012 Puppet is safer and more productive.
• Puppet is declarative, Chef procedural.
• Puppet brings system into compliance (state), Chef "does" things (recipes).
• Puppet has strong security practices; Chef has a toleration for loose security in Chef itself.
• Puppet makes it very hard to get "outside the lines" or violate its strong opinions; in Chef this is routine.

jgn

ActiveRecord::SchemaDumper.ignore_tables = ActiveRecord::Base.connection.tables - ['table_name']
ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, $stdout)

jgn

Foo

Bar Baz Boo

Bar

dddd

jgn

require 'active_support/version'
require 'active_support/core_ext/time/zones'
require 'active_support/core_ext/time/calculations'
require 'active_support/time_with_zone'

puts "ActiveSupport: #{ActiveSupport::VERSION::STRING}"

Time.zone = 'Eastern Time (US & Canada)'

def show_time user_time

jgn

drop table if exists student;
create table student (
  sno integer,
	sname varchar(10),
	age integer
);

drop table if exists courses;
create table courses (
	cno varchar(5),

jgn

def assert_equality(example, actual, expected)
  print "example #{example}: "
  if actual == expected
    puts 'Pass'
  else
    puts "Fail: got #{actual.inspect}; expected #{expected.inspect}"
  end
end

examples = [

jgn

class HalfAdder
  attr_reader :sum, :carry

  def initialize(augend, addend)
    @augend, @addend = augend, addend
  end

  def compute
  end
end

jgn

example [0, 0, 0, 0]: Fail: got nil; expected 0
example [0, 0, 0, 0]: Fail: got nil; expected 0
example [1, 0, 0, 1]: Fail: got nil; expected 0
example [1, 0, 0, 1]: Fail: got nil; expected 1
example [0, 1, 0, 1]: Fail: got nil; expected 0
example [0, 1, 0, 1]: Fail: got nil; expected 1
example [1, 1, 1, 0]: Fail: got nil; expected 1
example [1, 1, 1, 0]: Fail: got nil; expected 0

jgn

class HalfAdder
  attr_reader :sum, :carry

  def initialize(augend, addend)
    @augend, @addend = augend, addend
  end

  def compute
    @carry = @augend & @addend
    @sum = @augend ^ @addend