softprops

$(function() {
  var el            = $("#slide-9") // last slide
    , stream        = new WebSocket("ws://stream.meetup.com/2/photos")
    , target_event  = 156380082     // http://www.meetup.com/Application-Developers-Alliance-NYC-Meetup/events/156380082/
    , target_member = 8157820;      // me (doug)
  stream.onmessage = function (msg) {
    var item = msg.data ? JSON.parse(msg.data) : null;
    if (item) {
      var event_id    = item.photo_album.event ? item.photo_album.event.id : null
         , member_id  = item.member.member_id

softprops

/** a shortener for things that may have `long tails` */
case class Tailed[A, B: Numeric](
  population: Iterable[A], index: A => B, update: (A, B) => A) {
  private val num = implicitly[Numeric[B]]
  private lazy val indexed = population.groupBy(index)

  def shorten(threshold: Double = .03) = {
    val total     = num.toDouble(indexed.keys.reduce(num.plus))
    def accept(index: B) = (num.toDouble(index) / total) > threshold
    val accepted  = indexed.filterKeys(accept).values.flatten

softprops

var qparam = function(name) {
  var match = RegExp('[?&]' + name + '=([^&]*)').exec(window.location.search);
  return match && decodeURIComponent(match[1].replace(/\+/g, ' '));
}

softprops

#!/bin/sh
# read a java java's manifest file
unzip -p "$@" META-INF/MANIFEST.MF

softprops

function createWebSocket () {
  var connection = new WebSocket();
  var attempts = 1;
  
  connection.onopen = function () {
    // reset the tries back to 1 since we have a new connection opened.
    attempts = 1; 

    // ...Your app's logic...
  }

softprops

• hprof a builtin java agent which dumps profiling info at runtime
• class sharing class file cache used for faster startup times
• pack200 unpack200 uber packed jars
• mission control a Profiling, Monitoring, and Diagnostics Tools Suite
• jstat performance stats tool
• jhat heap dump browser
• jmap memory maps
• jstack prints stack trace of running process

softprops

export pub key

gpg --armor --export <you@host.com>

export private key

gpg --armor --export-secret-key 

softprops

case class Url(
  _host: String,
  _path: Seq[String] = Seq.empty[String],
  _query: Map[String, List[String]] = Map.empty[String, List[String]].withDefaultValue(Nil),
  _fragment: Option[String] = None,
  _scheme: Option[String] = None,
  _port: Option[Int] = None) {
  def host(host: String) = copy(_host = host)
  def param(k: String, v: String) = copy(_query = _query + (k -> (v :: _query(k))))
  def path(p: String) = copy(_path = p.split("/").filter(_.nonEmpty).toList)

softprops

(              a = all                 )
+------------+------------+------------+
|     u      |     g      |     o      |
+------------+------------+------------+
|    user    |   group    |  others    |
+------------+------------+------------+
| r | w  | x | r | w  | x | r | w  | x |
+------------+------------+------------+
| 4  | 2 | 1 | 4  | 2 | 1 | 4  | 2 | 1 |

softprops

Welcome to Scala version 2.10.4 (Java HotSpot(TM) 64-Bit Server VM, Java 1.7.0_51).
Type in expressions to have them evaluated.
Type :help for more information.

scala> def curryme(beep: Int)(boop: String*) = beep * boop.size
curryme: (beep: Int)(boop: String*)Int

scala> val c = curryme(1)_
c: Seq[String] => Int = <function1>