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#!/usr/bin/env ruby
# http://en.wikipedia.org/wiki/RADIX-50
class String
  R50_CHARS = " ABCDEFGHIJKLMNOPQRSTUVWXYZ$.%0123456789"
  R50_LOOKUP = {}.tap { |h| String::R50_CHARS.split(//).each_with_index { |c, i| h[c] = i } }
  R50_CLEAN = /[[:upper:]|[:digit:]| |.|$|%]/
  def radix50
    [].tap do |r|
      self.upcase.scan(R50_CLEAN).inject([]) do |m, c|
        m << R50_LOOKUP[c]

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# Memcache wrapping in a declarative fashion.
#
# Usage example:
#
#   class << self
#     extend Utils::MemoizableWithMC
#
#     def get_host_details(id)
#       select('host_first_name, host_last_name, host_email').find(id)
#     end

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# Force the underlying store for a Set to be an OrderedHash.
class OrderedSet < Set
  def initialize(enum = nil, &block)
    @hash ||= ActiveSupport::OrderedHash.new
    super
  end
end

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<script>
(function(){
  
  // http://webreflection.blogspot.com/2008/10/subclassing-javascript-native-string.html

  function MyString(__value__) {
    this.length = (this.__value__ = __value__ || "").length;
  };
  with(MyString.prototype = new String)
      toString = valueOf = function() { return this.__value__ };

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#!/usr/bin/env ruby

class MRISC
  def run(code)
    tokens = code.gsub(/(\*.*?\*)|[^a-z0-9,-;@\._]/,'').split(';')
    @vars,stack,i = {:_pc=>-1,:_oc=>0},[],0
    tokens.map!{|t| t.chars.first=='@' ? (@vars[t.to_sym]=i-1;nil) : (i+=1;t.split(',').map{|e|numeric?(e) ? e.to_i : e.to_sym})}.compact!
    while @vars[:_pc] < tokens.size-1
      @vars[:_pc] += 1
      @vars[:_oc] += 1

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Test

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crickets: "hears crickets chirping"
drama: "https://123.campfirenow.com/images/drama.jpg"
greatjob: "https://123.campfirenow.com/images/greatjob.png"
live: "is DOING IT LIVE"
pushit: "https://123.campfirenow.com/images/pushit.gif"
rimshot: "plays a rimshot"
secret: "found a secret area :key:"
tada: "ta-da! :flags:"
tmyk: ":sparkles: :star: The More You Know :sparkles: :star:"
trombone: "plays a sad trombone"

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#!/bin/sh

#
# Upgrade PostgreSQL from 9.0 to 9.1
#
# by David Sommers
#

brew update postgres

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class CachedSequence
  extend ActiveSupport::Memoizable

  def initialize(cache_key)
    @cache_key = cache_key
    ensure_value
  end

  def next
    Rails.cache.increment(cache_key)

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class CachedHash
  extend ActiveSupport::Memoizable

  def initialize(cache_key)
    @cache_key = cache_key
  end

  def [](key)
    fetch[key]
  end