tail-recursive.rb

# First, I suppose you have ruby 1.9.1 or 1.9.2
# Open irb. Execute this:
# RubyVM::InstructionSequence.compile_option = { tailcall_optimization: true, trace_instruction: false }
# Note, RubyVM::InstructionSequence.compile_option() doesn't have item :trace_instruction, still, you need to specify it. WTF?
# Also, it doesn't work if you just put it to the script. Don't know why yet. Tell me (@rofh) if you know.

# Then open the file:
# require "./tail-recursive"
# Then execute function:
# fact(30000)

behrends

# autoload concerns
module YourApp
  class Application < Rails::Application
    config.autoload_paths += %W(
      #{config.root}/app/controllers/concerns
      #{config.root}/app/models/concerns
    )
  end
end

mattpodwysocki

JSConf.EU 2011 Slides

JSConf.eu opening song - JavaScript Will Listen - Bella Morningstar

Downstairs (Day 1)

• Plask - Dean McNamee
• Plask

tenderlove

require 'thread'
require 'json'
require 'net/http'
require 'uri'
require 'betabrite'
require 'psych'
require 'usb'

class StreamClient
  def initialize user, pass

mislav

find ~ -name '*.log' -print0 | xargs -0 -L1 stat -f'%z %N' | sort -rn | tee fat-logfiles.txt | head

awk '{ total += $1 } END { printf "total: %5.2f MiB\n", total/1024/1024 }' < fat-logfiles.txt

bokmann

# This is the code from my 'There is No Such Thing as Metaprogramming' talk,
# which premiered at the Arlington, VA Ruby Users Group on Feb 22nd.
# Without the deliver and walk-through to the solution below this example
# will be missing quite an important bit of content (mainly the tracking of
# 'self' while developing the solution, but it still a useful read.

# Here is the Toddler with no metajuju. Note that the developer, as well as
# the code, is completely unuaware of the interpreter. A developer with a
# background in compiled languages would be comfortable looking at this.

wycats

# Just wanted to clarify my points at the meetup last night.
#
# There were two different issues intertwined:
# (1) Whether to use extend or "include as extend"
# (2) When using "include as extend", what is the simplest way to achieve the goal?
#
# My personal opinion is that the answer to (1) is "extend", not "include as extend", but that
# is just my personal opinion. My answer to (2) is a more empirical question.

# Using the "extend" approach. Again, I personally prefer the simplicity of this approach, but

rkh

This allows you to use the following video streaming services outside of the US from your Mac without having to use a proxy or VPN, so no big bandwidth issues:

• Hulu / HuluPlus
• CBS
• ABC
• MTV
• theWB
• CW TV
• Crackle
• NBC

sj26

Patched ruby 1.9.3-p194 for 30% faster rails boot

What is?

This script installs a patched version of ruby 1.9.3-p194 with patches for boot-time performance improvements (#66 and #68), and runtime performance improvements (#83 and #84). It also includes the new backported GC from ruby-trunk.

Huge thanks to funny-falcon for the performance patches.

• http://github.com/ruby/ruby/pull/66
• http://github.com/ruby/ruby/pull/68

burke

ruby-1.9.3-p327 cumulative performance patch for rbenv

This installs a patched ruby 1.9.3-p327 with various performance improvements and a backported COW-friendly GC, all courtesy of funny-falcon.

Requirements

• rbenv
• ruby-build

You will also need a C Compiler. If you're on Linux, you probably already have one or know how to install one. On OS X, you should install XCode, and brew install autoconf using homebrew.