acook

Binary Data

It can be challenging to use Ruby for handling raw binary data, involving a lot of Array#pack and String#unpack with the possibility of String#ord and Numeric#chr for good measure. Some of these tools might make the job a bit easier, allowing your to define schemas of the binary data and how to parse it, or even just allowing your to specify the format in a more verbose way.

Gems

BinData

acook

#!/usr/bin/env/bash
# run this like: `curl https://gist.github.com/acook/6192391/raw/ubuntu_server_setup.bash | bash`

echo "Enter the email address for this server's SSH key: "

read email
mkdir ~/.ssh
ssh-keygen -t rsa -C $email

echo "Enter password to install packages: "

acook

module PubSub
  class << self
    def create type, channel, object
      channel = channel.to_sym

      case type
      when :listener
        listeners[channel] ||= Array.new
        listeners[channel] << object
        channels[channel] ||= Array.new

jstorimer

This is a proof-of-concept of a couple of concurrent data structures written in Ruby.

The implementations are heavily commented for those interested. There are benchmarks (with results) included below. The results are interesting, but, as always, take with a grain of salt.

Data structures

AtomicLinkedQueue is a lock-free queue, built on atomic CAS operations.

doitian

#!/usr/bin/env zsh

set -e

[ -e /tmp/test.fifo ] || mkfifo /tmp/test.fifo

# open the FIFO on fd 3 without blocking
exec 3<> /tmp/test.fifo

zmodload zsh/zselect

TylerRick

# DelegateToAll. Like delegate.rb from Ruby's std lib but lets you have multiple target/delegate objects.

require 'delegate'

class DelegatorToAll < Delegator
  # Pass in the _obj_ to delegate method calls to.  All methods supported by
  # _obj_ will be delegated to.
  #
  def initialize(*targets)
    __setobj__(targets)

sj26

# Stick this in lib/tasks/assets.rake or similar
#
# A bug was introduced in rails in 7f1a666d causing the whole application cache
# to be cleared everytime a precompile is run, but it is not neccesary and just
# slows down precompiling.
#
# Secondary consequences are the clearing of the whole cache, which if using
# the default file cache could cause an application level performance hit.
#
# This is already fixed in sprockets-rails for rails 4, but we patch here for

mburst

from bitarray import bitarray
import mmh3

class BloomFilter:
    
    def __init__(self, size, hash_count):
        self.size = size
        self.hash_count = hash_count
        self.bit_array = bitarray(size)
        self.bit_array.setall(0)

agnoster

agnoster.zsh-theme

A ZSH theme optimized for people who use:

• Solarized
• Git
• Unicode-compatible fonts and terminals (I use iTerm2 + Menlo)

For Mac users, I highly recommend iTerm 2 + Solarized Dark

nhance

Model.new.foo