jorgeortiz85

// Usage:
//   p(instance)('privateMethod)(arg1, arg2, arg3)

class PrivateMethodCaller(x: AnyRef, methodName: String) {
  def apply(_args: Any*): Any = {
    val args = _args.map(_.asInstanceOf[AnyRef])
    def _parents: Stream[Class[_]] = Stream(x.getClass) #::: _parents.map(_.getSuperclass)
    val parents = _parents.takeWhile(_ != null).toList
    val methods = parents.flatMap(_.getDeclaredMethods)
    val method = methods.find(_.getName == methodName).getOrElse(throw new IllegalArgumentException("Method " + methodName + " not found"))

oxbowlakes

/**
 * Part Zero : 10:15 Saturday Night
 *
 * (In which we will see how to let the type system help you handle failure)...
 *
 * First let's define a domain. (All the following requires scala 2.9.x and scalaz 6.0)
 */

import scalaz._
import Scalaz._

viktorklang

trait Enum { //DIY enum type
  import java.util.concurrent.atomic.AtomicReference //Concurrency paranoia

  type EnumVal <: Value //This is a type that needs to be found in the implementing class

  private val _values = new AtomicReference(Vector[EnumVal]()) //Stores our enum values

  //Adds an EnumVal to our storage, uses CCAS to make sure it's thread safe, returns the ordinal
  private final def addEnumVal(newVal: EnumVal): Int = { import _values.{get, compareAndSet => CAS}
    val oldVec = get

lloeki

#!/usr/bin/env python

from __future__ import print_function
from __future__ import division

from subprocess import Popen, PIPE

def ioreg_battery_info():
    output = Popen(["ioreg", "-r", "-k", "LegacyBatteryInfo", "-w", "0"], stdout=PIPE).communicate()[0]
    try: #python3

viktorklang

/*©2013 Viktor Klang*/
package akka.util
import java.util.concurrent.atomic.AtomicReference
import scala.concurrent.{ Future, ExecutionContext }
import scala.annotation.tailrec
class Cache[K, V](__ec: ExecutionContext, throughput: Int) extends AtomicReference[Map[K, V]] {
  implicit val executor = SerializedSuspendableExecutionContext(throughput)(__ec)
  @tailrec final def update(f: Map[K, V] ⇒ Map[K, V]): Map[K, V] = {
    val v = get
    val nv = f(v)

travisbrown

// I'll assume you have something like the following:

import shapeless._

val fs = ((i: Int) => "a" * i) :: ((i: Int) => i + 42) :: HNil
val x = 3

// And you want this:

val result = "aaa" :: 45 :: HNil

jcs

Update (2019-05-06): The Broadcom wireless card in the MacBook Pro works and can be crammed into the Air.

Update (2015-12-04): This document used to be very lengthy as there were many manual steps required to get OpenBSD and Mac OS X working together through Boot Camp Assistant (BCA), which created a hybrid MBR and enabled a legacy BIOS emulation mode which older versions of Windows (and OpenBSD) required. Newer Macbooks stopped supporting older versions of Windows through BCA and now only support Windows 10 since it uses GPT and UEFI. However, now that newer versions of OpenBSD support GPT and UEFI, Boot Camp Assistant is no longer needed at all to boot OpenBSD.

macOS FileVault encryption and OpenBSD encrypted softraid on a Macbook Air/Pro

OpenBSD works pretty well on at least the Mid-2011 Macbook Air (A1370, SandyBridge) and Mid-2013 Macbook Air (Haswell). The new KMS code in 5.4 brings up the MBA's eDP display in 1366x768 with backlight

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

aktau

def movingRunningApprox(window: Int, l: Seq[Int]) = {
    val N = window

    val seedrun = l.take(N)
    var avg = seedrun.sum / seedrun.length

    println(l)
    val xs = l map { el =>
        val (pre,dec,inc) = (avg,avg/N,el/N)
        avg = avg - avg/N + el/N

nh2

{-# LANGUAGE FlexibleInstances, GeneralizedNewtypeDeriving #-}


newtype TimeUnit = TimeUnit Integer -- how many microseconds
  deriving (Eq, Show, Num)

instance Num (TimeUnit -> TimeUnit) where
  fromInteger n = \(TimeUnit scale) -> TimeUnit (n * scale)
  -- a + b = ... -- task for you