benolee

DATA.instance_eval { truncate pos.tap { reopen __FILE__, "a+" } }
$stdout = DATA

opts = [nil, nil, nil, trace_instruction: false]
puts "-----> returning from a compiled method"
puts RubyVM::InstructionSequence.new("def _return() return end", *opts).disasm
puts
puts "-----> returning from a lambda"
puts RubyVM::InstructionSequence.new("-> { return }", *opts).disasm
puts

benolee

@counter = 0

def big_calculation
  @counter += 1
end
private :big_calculation

heading "before local variable assignment, with implicit receiver"
item "big_calculation"
puts big_calculation

benolee

require "set"

module RakeTask
  CALLED = Set.new
  NAMESPACES = []
  TASKS = Hash.new { |h, k| h[k] = Struct.new(:blocks, :deps).new([], []) }

  class << self
    def call(name)
      return if CALLED.include?(name)

benolee

$ cat Gemfile
source :rubygems
gem 'systemu'

$ cat wat.rb
require 'systemu'
p systemu 'ls', 'stdout' => '', 'stderr' => ''

$ rbenv shell jruby-1.6.7
$ bundle exec ruby wat.rb

benolee

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

benolee

[ Launch: General Update Pattern, III ] 5033213 by benolee

benolee

# slide 77 from waza talk
# method definition with static scope, class eval'd in a string

# Environment

class Foo
  hello = "world!"
  define_method("foo") { hello }

  class_eval "def bar; hello; end"

benolee

init

mkdir proj
cd proj
git init

config

git config user.name 'username'

benolee

#!/usr/bin/env PeanutButterJellyTime
# -----------------------------------------------------------------------------
# keyword => C equiv            (description)
# -----------------------------------------------------------------------------
# peanut  => ++*ptr             (increase value of cell)
# PEANUT  => ++ptr              (move to next cell)
# butter  => --*ptr             (decrease value of cell)
# BUTTER  => --ptr              (move to previous cell)
# jelly   => putchar(*ptr)      (print character value of cell)
# JELLY   => *ptr=getchar()     (store numeric value of char input in cell)

benolee

.DS_Store
tmp/