Manu Zhang manuzhang

Libraries

Web Server: Play (framework) or http4s (library)
Actors: akka
Asynchronous Programming: monix (for tasks, reactors, observables, scheduler etc)
Authentication: Silhouette
Authorization: Deadbolt
Command-line option parsing: case-app
CSV Parsing: kantan.csv
DB: doobie (for PostgreSQL)

An Ansible summary

Jon Warbrick, July 2014, V3.2 (for Ansible 1.7)

Configuration file

First one found from of

Explaining Miles's Magic

Miles Sabin recently opened a pull request fixing the infamous SI-2712. First off, this is remarkable and, if merged, will make everyone's life enormously easier. This is a bug that a lot of people hit often without even realizing it, and they just assume that either they did something wrong or the compiler is broken in some weird way. It is especially common for users of scalaz or cats.

But that's not what I wanted to write about. What I want to write about is the exact semantics of Miles's fix, because it does impose some very specific assumptions about the way that type constructors work, and understanding those assumptions is the key to getting the most of it his fix.

For starters, here is the sort of thing that SI-2712 affects:

def foo[F[_], A](fa: F[A]): String = fa.toString

Introductory Material

Add Graal JIT Compilation to Your JVM Language in 5 Steps, A Tutorial http://stefan-marr.de/2015/11/add-graal-jit-compilation-to-your-jvm-language-in-5-easy-steps-step-1/
The SimpleLanguage, an example of using Truffle with great JavaDocs. It is the officle getting-started project: https://github.com/graalvm/simplelanguage
Truffle Tutorial, Christan Wimmer, PLDI 2016, 3h recording https://youtu.be/FJY96_6Y3a4 Slides

	#!/bin/bash
	# Copyright 2015, Yahoo Inc.
	# Licensed under the terms of the Apache License 2.0. Please see LICENSE file in the project root for terms.
	alias ssh="ssh -i ~/.ssh/id_rsa";
	alias scp="scp -i ~/.ssh/id_rsa";

	set -o errtrace

	kafkaCluster="node13-1 node13-2 node13-3 node13-4"
	zookeeperCluster="node13-1 node13-2 node13-3"

	package com.softwaremill.akka

	import java.time._

	import akka.actor.ActorSystem
	import akka.stream.ActorMaterializer
	import akka.stream.scaladsl.Source

	import scala.collection.mutable
	import scala.concurrent.Await

	import java.io._
	import scala.io._
	import java.util.zip._

	// Spark
	import org.slf4j.Logger
	import org.apache.spark.{ SparkConf, SparkContext, Logging }

	// Hadoop
	import org.apache.hadoop.io.compress.GzipCodec

	jupyter:
	image: jupyter/datascience-notebook
	environment:
	- PASSWORD=${PASSWORD}


	nginx:
	image: nginx
	links:
	- jupyter

	import akka.actor.ActorSystem
	import akka.http.scaladsl.Http
	import akka.stream.ActorMaterializer

	object Boot extends App with Service with CorsSupport {
	override implicit val system = ActorSystem()
	override implicit val executor = system.dispatcher
	override implicit val materializer = ActorMaterializer()

	Http().bindAndHandle(corsHandler(routes), "0.0.0.0", 1337)