nwjsmith

#!/usr/bin/env ruby

require 'csv'
require 'socket'

class AverageSessionsPerServer
  Server = Struct.new(:name, :current_sessions, :status) do
    META_SERVER_NAMES = ['FRONTEND', 'BACKEND'].freeze

    def up?

nwjsmith

# Act like Vim
setw -g mode-keys vi

# Use the mouse
set -g mode-mouse on

# Look good
set -g default-terminal "screen-256color"
set -g status-right "#[fg=black]#(rbenv version | awk '{ print $1 }' 2> /dev/null)"
set -g status-bg "blue"

nwjsmith

Installing rbx-2.0.0-dev with Ruby 1.9 support using rbenv can be a tad tricky. This is what I did to get up and running, you'll need another version of ruby already installed as well as rake.

The basic outline:

1. Clone Rubinius HEAD from github
2. Configure installation for rbenv and 1.9 support
3. Install Rubinius
4. Configure your $PATH to use Rubinius gems
5. Start using Rubinius

nwjsmith

L1 cache reference                          0.5 ns
Branch mispredict                             5 ns
L2 cache reference                            7 ns             14x L1 cache
Mutex lock/unlock                            25 ns
Main memory reference                       100 ns             20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy              3,000 ns
Send 1K bytes over 1 Gbps network        10,000 ns    0.01 ms
Read 1 MB sequentially from memory      250,000 ns    0.25 ms
Round trip within same datacenter       500,000 ns    0.5  ms
Read 1 MB sequentially from SSD       1,000,000 ns    1    ms  4X memory

nwjsmith

Hash#structurally_equal?
  when compared with a single-level hash
    with the same keys
      should be true
    with different keys
      should be false
    with more keys
      should be false
    with less keys

nwjsmith

vagrant@master:~$ python --version
Python 2.6.5
vagrant@master:~$ wget https://raw.github.com/gist/2126960/9babcd4b49b8ae4841b92a5b5124eb6fc84027d7/destdir.py
--2012-03-20 06:18:51--  https://raw.github.com/gist/2126960/9babcd4b49b8ae4841b92a5b5124eb6fc84027d7/destdir.py
Resolving raw.github.com... 207.97.227.243
Connecting to raw.github.com|207.97.227.243|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 996 [text/plain]
Saving to: `destdir.py'

nwjsmith

defaults: &defaults # The '&' creates a reference called 'defaults' for later
  grizzlies: 'hardcore'
  pandas: 'stupid'

mammals:
  pandas: 'furry' # Overrides key/value in 'defaults'
  <<: *defaults # Concatenates defaults

bears:
  grizzlies: 'smelly' # Overrides key/value in 'defaults'

nwjsmith

# You write a class called Wrapper, that has a single static function named
# wrap that takes two arguments, a string, and a column number. The function
# returns the string, but with line breaks inserted at just the right places
# to make sure that no line is longer than the column number. You try to break
# lines at word boundaries.
#
# Like a word processor, break the line by replacing the last space in a line
# with a newline.

class Wrapper

nwjsmith

#!/bin/sh

set -e

# Add host-only network
cat <<-EOF > /etc/network/interfaces
# Loopback
auto lo
iface lo inet loopback

nwjsmith

#!/bin/sh

set -e

# Add host-only network
cat <<-EOF > /etc/network/interfaces
# Loopback
auto lo
iface lo inet loopback