gus

For each Ruby module/class, we have Ruby methods on the left and the equivalent
Clojure functions and/or relevant notes are on the right.

For clojure functions, symbols indicate existing method definitions, in the 
clojure namespace if none is explicitly given.  clojure.contrib.*/* functions can
be obtained from http://github.com/kevinoneill/clojure-contrib/tree/master,
ruby-to-clojure.*/* functions can be obtained from the source files in this
gist.

If no method symbol is given, we use the following notation:

mloughran

Getting started

First add your twitter username and password. Then server.rb and once it's started open websocket.html in your browser. You should see some tweets appear. If not take a look at the javascript console.

rstacruz

Rails Models

Generating models

$ rails g model User

Associations

belongs_to

has_one

kyanny

defmodule Fib do 
  def fib(0) do 0 end
  def fib(1) do 1 end
  def fib(n) do fib(n-1) + fib(n-2) end
end

IO.puts Fib.fib(10)

sirupsen

# fibonacci
h = Hash.new { |hash,key| hash[key] = hash[key-1] + hash[key-2] }
h[1] = 0
h[2] = 1

rtekie

# Support for Rspec / Capybara subdomain integration testing
# Make sure this file is required by spec_helper.rb
#  
# Sample subdomain test: 
# it "should test subdomain" do
#   switch_to_subdomain("mysubdomain")
#   visit root_path
# end

DEFAULT_HOST = "lvh.me"

cataska

;; Why is Lisp so great? or Why so many parenthesis?

;; The funny thing about Lisp is that everybody asks why it has so may parenthesis. Quite a few friends of mine who have studied Lisp in college don’t like it that much. I couldn’t really understand why, until I realized they usually take a class that uses the book Concepts of Programming Languages by Robert W. Sebesta as a textbook. I’m in no position to review this book because I haven’t read it. But from what I’ve skimmed, Lisp is not very well represented in this book, to put it very nicely. He describes Lisp only as a functional programming language, tells a little bit about cons cells, and that’s pretty much it! No object orientation in lisp, no syntactic abstraction, no meta-programming, and so on. My feeling is that if I didn’t know Lisp and read this book I wouldn’t be very impressed by Lisp.

;; So why is Lisp so great and why so many parenthesis? These two different questions have the same answer; because Lisp have syntactic abstraction trough t

sky-y

;; Open the file name being pointed in an other window or dired
;; reference: http://kouzuka.blogspot.com/2011/02/emacsurlfinder.html
(defun my-directory-or-file-p (path)
  "return t if path is a directory,
return nil if path is a file"
  (car (file-attributes path)))

(defun my-open-emacs-at-point ()
  "open the file with opening emacs"
  (interactive)

onyxraven

#XLarge DBInstanceClassMemory = 15892177440 = 14.8GB
#/32 = 496630545 = 473MB
#/64 = 248315272 = 236MB
#/128 = 124157636 = 118MB
#/256 = 62078818 = 59MB
#/512 = 31039409 = 29MB
#/12582880 = 1263 #default same divisor as max_connections = 4041.6MB = 4237924762
#/25165760 = 623 # half of max_connections = 1993.6MB
#/50331520 = 315 # quarter of max_connections = 1008MB = 1056964608
#*(3/4) #default innodb pool size = 11922309120

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000