kevinwright

import shapeless._

trait Thingy[T] { def stringy(t:T): String }

implicit def autoThingy[T <: Product](implicit gen: LabelledGeneric[T]) : Thingy[T] = new Thingy[T] {
  def toRecord[T <: Product, Repr](obj: T)(implicit lg: LabelledGeneric.Aux[T, Repr]): Repr = lg.to(obj)
  def stringy(t: T) = {
    val rec = toRecord(t)
    val keys = rec.keys
    keys.mkString

kevinwright

import shapeless._

case class Wibble(x: Int, y: String)
val wib = Wibble(42, "towel")

def recOf[T](obj: T)(implicit gen: LabelledGeneric[T]) = gen.to(obj)
recOf(wib)  // works beautifully

class ClassyRecOf[T](implicit gen: LabelledGeneric[T]) {
  def doIt(obj: T) = gen.to(obj)

kevinwright

import akka.actor._
import scala.collection.mutable

case class DeferredActorRef(implicit factory: ActorRefFactory) {
  private[this] val innerActor = factory.actorOf(Props(new TheActor))

  private[this] case class SetRef(ref: ActorRef)

  private[this] class TheActor extends Actor with ActorLogging {
    val buffer: mutable.Queue[(Any, ActorRef)] = mutable.Queue.empty

kevinwright

Keybase proof

I hereby claim:

• I am kevinwright on github.
• I am thecoda (https://keybase.io/thecoda) on keybase.
• I have a public key whose fingerprint is 7B0A E482 1479 D389 A452 49B7 EF27 0EC3 7CC6 9FE9

To claim this, I am signing this object:

kevinwright

java.lang.NullPointerException
        at scala.reflect.internal.Scopes$Scope.unlink(Scopes.scala:202)
        at scala.reflect.internal.Scopes$Scope.unlink(Scopes.scala:222)
        at org.scalamacros.paradise.typechecker.Namers$Namer$MaybeExpandeeCompleter$$anonfun$destroy$1.apply(Namers.scala:301)
        at org.scalamacros.paradise.typechecker.Namers$Namer$MaybeExpandeeCompleter$$anonfun$destroy$1.apply(Namers.scala:299)
        at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
        at scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:35)
        at org.scalamacros.paradise.typechecker.Namers$Namer$MaybeExpandeeCompleter.destroy(Namers.scala:299)
        at org.scalamacros.paradise.typechecker.Namers$Namer$$anon$2.maybeExpand(Namers.scala:393)
        at org.scalamacros.paradise.typechecker.Namers$Namer$MaybeExpandeeCompleter.completeImpl(Namers.scala:320)

kevinwright

As compiled by Kevin Wright a.k.a @thecoda

(executive producer of the movie, and I didn't even know it... clever huh?)

please, please, please - If you know of any slides/code/whatever not on here, then ping me on twitter or comment this Gist!

This gist will be updated as and when I find new information. So it's probably best not to fork it, or you'll miss the updates!

Monday June 16th

kevinwright

#!/bin/bash

if [ $# -lt 2 ]; then
  echo "format: git_cleanup <repo name> [-x/--expunge <directory 1> -l/--keeplatest <directory 2> ...]"
  exit
fi

PROJ="$1"
shift

kevinwright

#!/bin/bash
set -f
SUBBED=($(sed -e "s,multiply,*,g" -e "s,divide,/,g" -e "s,add,+,g" -e "s,subtract,-,g" -e "s,apply,,g" -e "s, *,,g" $1))
EXPR=""
for (( idx=${#SUBBED[@]}-1 ; idx>=0 ; idx-- )) ; do EXPR="($EXPR ${SUBBED[idx]})"; done
echo $(($EXPR))

kevinwright

#!/bin/bash

#disable globbing of the *
set -f

INPUT=$1

SUBBED=($(
  sed \
  -e "s,multiply,*,g" \

kevinwright

trait Proletariat {
  type BigNumberT
  def retirementAge: BigNumberT
  
  val bippy = "hi mum"
  def twiddle = 42
  def twaddle = 1
}

trait BiggerTwaddle {