jcoglan

# A possibly misguided attempt to introduce automatic operator commutativity to Ruby. Say
# I add a '+' method to Range so that for example:
#
#     (3..7) + 12 #=> (15..19)
#
# I'd expect to be able to call '12 + (3..7)' and get the same answer. This means I need
# to override Fixnum#+, meaning my new addition operator is expressed in two places. This
# module generates methods that automatically fill in the gaps so you only need to express
# the semantics of an operator in a single method, in a single class.
#

jcoglan

class Module
  # Inspect the method lookup process like you can in JS.Class
  # http://jsclass.jcoglan.com/reflection.html
  # 
  #     Array.lookup :any?
  #     #=> [#<UnboundMethod: Enumerable#any?>]
  #     
  #     class Array; def any?; super; end; end
  #     Array.lookup :any?
  #     #=> [#<UnboundMethod: Array#any?>, #<UnboundMethod: Enumerable#any?>]

jcoglan

# Make Ruby Hashes look more like JavaScript objects. Uses
# instance_exec so you can store lambdas on the object and
# call them like methods
# 
# o = {}
# o.foo = 'foostring'
# o.bar = lambda { |s| s + foo }
# 
# o.bar('barstring') #=> 'barstringfoostring'

jcoglan

# Subclass of Module, used for storing methods copied from other
# modules and classes. This lets classes shuffle their methods off
# into a module to we can place other modules in front of the
# class's own methods
class StashModule < Module
  class << self
    def [](id)
      @modules[id]
    end
    

jcoglan

Function.prototype.diff = function(eps) {
    var fn = this, eps = eps || 1e-6;
    return function(x) {
        return (fn(x+eps) - fn(x)) / eps;
    };
};

(function(x) { return x*x }).diff()(6)
// -> 12

jcoglan

# ~/.bashrc: executed by bash(1) for non-login shells.
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
# for examples

# If not running interactively, don't do anything
[ -z "$PS1" ] && return

# don't put duplicate lines in the history. See bash(1) for more options
# don't overwrite GNU Midnight Commander's setting of `ignorespace'.
export HISTCONTROL=$HISTCONTROL${HISTCONTROL+,}ignoredups

jcoglan

[user]
    name = James Coglan
    email = jcoglan@googlemail.com

[alias]
    ci = commit -a
    co = checkout
    st = status
    sta = status -a
    praise = blame 

jcoglan

class Module
  
  def include_no_hooks(mod)
    include Module.new { include mod }
  end
  
  def extend_no_hooks(mod)
    extend Module.new { include mod }
  end

jcoglan

# Stripped-down version of Consent's expression language
# http://blog.jcoglan.com/2009/01/07/writing-your-own-expression-language-in-ruby/
# http://blog.jcoglan.com/2009/01/16/and-now-the-rules/

require 'observer'

module Consent
  
  class Expression
    def initialize(controller, params = {})

jcoglan

# Make up for Ruby's odd lack of support for blocks as observers
# 
#   class Foo
#     include Observable::Blocks
#   end
#   
#   f = Foo.new
#   f.add_observer { puts "f changed" }

require 'observer'