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:

richhickey

;variants of the code from point #2 of:
; http://www.tbray.org/ongoing/When/200x/2009/12/01/Clojure-Theses

;original

(apply merge-with +
  (pmap count-lines
    (partition-all *batch-size*
      (line-seq (reader filename)))))

ghoseb

;;
;; NS CHEATSHEET
;;
;; * :require makes functions available with a namespace prefix
;;  and optionally can refer functions to the current ns.
;;
;; * :import refers Java classes to the current namespace.
;;
;; * :refer-clojure affects availability of built-in (clojure.core)
;;   functions.

xaviershay

# Hacks to get nested transactions in Postgres
# Not extensively tested, more a proof of concept
#
# It re-opens the existing Transaction class to add a check for whether
# we need a nested transaction or not, and adds a new NestedTransaction
# transaction primitive that issues savepoint commands rather than begin/commit.

module DataMapper
  module Resource
    def transaction(&block)

arpit

/**
This code snippet shows how an Android activity can trigger a web based auth using webview and then use
the cookies from there to make subsequent calls to an API (since the api is checking the cookies to detect
sign in)

MyApplication:  The root "controller" and the first activity in my app
OAuthLogin:     A class that handles the web based login.
                It montors the url change and if the user had been redirected to 
                a "success" page it sends out the cookie string to the root controller
                Once the controller has the cookie, it sets those on the service that

mathiasbynens

#!/bin/bash

if [ "$1" = "-h" -o "$1" = "--help" -o -z "$1" ]; then cat <<EOF
appify v3.0.1 for Mac OS X - http://mths.be/appify
Creates the simplest possible Mac app from a shell script.

Appify takes a shell script as its first argument:

    `basename "$0"` my-script.sh

jeffkreeftmeijer

copiousfreetime

#!/usr/bin/env ruby

#
# A quick script to dump an overview of all the open issues in all my github projects
#

require 'octokit'
require 'awesome_print'
require 'rainbow'

dmitryame

#jruby hacks

jps -ml #show java processes running

jstack <pid>  #get a jvm stack info

jruby -J-Djruby.reify.classes=true   # a flag that tell jruby to compile ruby classes to real (matching) java classes

jvisualvm #great profiling tool

lpar

# Runs a specified shell command in a separate thread.
# If it exceeds the given timeout in seconds, kills it.
# Returns any output produced by the command (stdout or stderr) as a String.
# Uses Kernel.select to wait up to the tick length (in seconds) between 
# checks on the command's status
#
# If you've got a cleaner way of doing this, I'd be interested to see it.
# If you think you can do it with Ruby's Timeout module, think again.
def run_with_timeout(command, timeout, tick)
  output = ''