gcatlin

brew update
brew versions FORMULA
cd `brew --prefix`
git checkout HASH Library/Formula/FORMULA.rb  # use output of "brew versions"
brew install FORMULA
brew switch FORMULA VERSION
git checkout -- Library/Formula/FORMULA.rb    # reset formula

## Example: Using Subversion 1.6.17
#

jlongster

(trace-source (let ((i (+ 4 5)))
                (+ i (* 2 (/ 3 4)))))


;; Output

(let ((i (+ 4 5)))
 (+ i (* 2 (/ 3 4))))
-- (+ 4 5)
>> RESULT: 9

jlongster

;; outlet code for implementing traditional macro expansion

;; macros

(define (expand form)
  (cond
   ((variable? form) form)
   ((literal? form) form)
   ((macro? (car form))
    (expand ((macro-function (car form)) form)))

gorsuch

(defn uuid [] (str (java.util.UUID/randomUUID)))

mbostock

license: gpl-3.0
redirect: https://observablehq.com/@mbostock/epicyclic-gearing

jneira

(ns express_sample
  (:require [cljs.nodejs :as node]))

(def express (node/require "express"))
(def app (. express (createServer)))

(defn -main [& args]
  (doto app
    (.use (. express (logger)))
    (.get "/" (fn [req res]

louisremi

// Cross browser, backward compatible solution
(function( window, Date ) {
// feature testing
var raf = window.mozRequestAnimationFrame    ||
          window.webkitRequestAnimationFrame ||
          window.msRequestAnimationFrame     ||
          window.oRequestAnimationFrame;

window.animLoop = function( render, element ) {
  var running, lastFrame = +new Date;

pietern

# Author: Pieter Noordhuis
# Description: Simple demo to showcase Redis PubSub with EventMachine
#
# Update 7 Oct 2010:
# - This example does *not* appear to work with Chrome >=6.0. Apparently,
#   the WebSocket protocol implementation in the cramp gem does not work
#   well with Chrome's (newer) WebSocket implementation.
#
# Requirements:
# - rubygems: eventmachine, thin, cramp, sinatra, yajl-ruby