zeeshanlakhani

/**
 * Creates an ArrayBuffer, converts the binary to a Uint8 Array, and
 * places the buffer in a DataView, which is needed to create a Blob
 **/
_makeBlob: function(binary) {
    var data = new ArrayBuffer(binary.length),
        mimeString = "text/plain",
        ui8a =  new Uint8Array(data, 0),
        dataView,
        blob;

tonyg

#lang racket

(require racket/udp)

(define count 0)

(define s (udp-open-socket #f #f))
(udp-bind! s #f 12346)

(define buffer (make-bytes 1024))

jashkenas

# MAC manipulators
alias random_mac='sudo ifconfig en0 ether `openssl rand -hex 6 | sed "s/\(..\)/\1:/g; s/.$//"`'
alias restore_mac='sudo ifconfig en0 ether YOUR_ORIGINAL_MAC_ADDRESS_GOES_HERE'

qtrfeast

Check out README.md to get started editing Clojure with Emacs.

jackrusher

Hofstadter on Lisp

In the mid-80s, while reading through my roommate's collection of Scientific American back issues, I encountered this introduction to Lisp written by Douglas Hofstadter. I found it very charming at the time, and provide it here (somewhat illegally) for the edification of a new generation of Lispers.

In a testament to the timelessness of Lisp, you can still run all the examples below in emacs if you install these aliases:

(defalias 'plus #'+)
(defalias 'quotient #'/)
(defalias 'times #'*)
(defalias 'difference #'-)

carl-eastlund

#lang mischief

(provide
  stylish-write-json
  stylish-writeln-json
  json-print-style)

(require json)

(module+ main

rufuspollock

Additions wanted - please just fork and add.

Tutorials

• Parsing PDFs by Thomas Levine
• [Get Started With Scraping – Extracting Simple Tables from PDF Documents][scoda-simple-tables]

Generic (PDF -> text)

imathis

# This is part of a simple javascript router I'm writing.
# When a link is clicked, the router checks to see if the url should trigger a route callback
# Here I demonstrate a way to improve long conditional statements with coffeescript and underscore.js

# Before: Concise but hard to read, hard to comment and hard to modify.

routeUrl: (url)->
  return false if url is window.location.pathname || url.match /^http|^#/ || url.match /\.(png|gif|je?pg|pdf)$/i
  url

jackrusher

Object-orientation

There are many articles and discussion threads on the web regarding the nature of Object-oriented (OO) programming. Most of them come at the question from a Programming Language Theory (PLT) perspective, attempting to assert a formal definition of OO programming and objects. I'm not going to do that here. Instead, I'm going to write about objects from an implementation perspective, approaching the subject first from below and then from above.

jed

How to set up stress-free SSL on an OS X development machine

One of the best ways to reduce complexity (read: stress) in web development is to minimize the differences between your development and production environments. After being frustrated by attempts to unify the approach to SSL on my local machine and in production, I searched for a workflow that would make the protocol invisible to me between all environments.

Most workflows make the following compromises:

• Use HTTPS in production but HTTP locally. This is annoying because it makes the environments inconsistent, and the protocol choices leak up into the stack. For example, your web application needs to understand the underlying protocol when using the secure flag for cookies. If you don't get this right, your HTTP development server won't be able to read the cookies it writes, or worse, your HTTPS production server could pass sensitive cookies over an insecure connection.

• Use production SSL certificates locally. This is annoying