mareksuscak

# Disable DND on non-Sierra
osascript >/dev/null <<'END'
tell application "System Events"
  tell application process "SystemUIServer"
    try
      if exists menu bar item "Notification Center, Do Not Disturb enabled" of menu bar 2 of application process "SystemUIServer" of application "System Events" then
        key down option
        click menu bar item "Notification Center, Do Not Disturb enabled" of menu bar 2
        key up option
      end if

djspiewak

Quick Tips for Fast Code on the JVM

I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information. It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic. So… here's my word of mouth.

This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Flight Recorder, and a good profiler are your very best friend! Mea

olafurpg

import sbt._, Keys._
import scala.xml.{Node => XmlNode, NodeSeq => XmlNodeSeq, _}
import scala.xml.transform.{RewriteRule, RuleTransformer}
import sbt.plugins.JvmPlugin

object PPrintPlugin extends AutoPlugin {
  override def requires = JvmPlugin
  override def trigger: PluginTrigger = AllRequirements
  override def projectSettings: Seq[Def.Setting[_]] = List(
    libraryDependencies ++= {

jkpl

Error handling pitfalls in Scala

There are multiple strategies for error handling in Scala.

Errors can be represented as [exceptions][], which is a common way of dealing with errors in languages such as Java. However, exceptions are invisible to the type system, which can make them challenging to deal with. It's easy to leave out the necessary error handling, which can result in unfortunate runtime errors.

bmc

object StaticFile {

  // Various necessary imports. Notes:
  //
  // 1. fs2 is necessary. See https://github.com/functional-streams-for-scala/fs2
  // 2. streamz is necessary. See https://github.com/krasserm/streamz
  // 3. Apache Tika is used to infer MIME types from file names, because it's more reliable and
  //    fully-featured than using java.nio.file.Files.probeContentType().
  //
  // If using SBT, you'll want these library dependencies and resolvers:

jdegoes

Applied Functional Programming with Scala - Notes

Copyright © 2016-2018 Fantasyland Institute of Learning. All rights reserved.

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

tonymorris

// What is the output of this program? (1)
// a) m
// b) main
// c) compile-error
// d) runtime exception
// e) something else ______
//
// Now change the access modifier on the printS method to anything but private.
// What is the output of the program now? (2)
// a) m

etorreborre

scala> import cats.implicits._
import cats.implicits._

scala> (1 -> 2) === (1 -> 3)
res0: Boolean = true

scala> import scala.reflect.runtime.universe._
import scala.reflect.runtime.universe._

scala> showCode(reify { (1 -> 2) === (1 -> 3) }.tree)

BretFisher

sudo: required #is required to use docker service in travis

language: php #can be any language, just php for example

services:
  - docker # required, but travis uses older version of docker :(

install:
  - echo "install nothing!" # put your normal pre-testing installs here

davidmweber

package co.horn.streaming

import akka.actor.ActorSystem
import akka.http.ConnectionPoolSettings
import akka.http.scaladsl.Http
import akka.http.scaladsl.model.{HttpResponse, HttpRequest}
import akka.stream.ActorMaterializer
import akka.stream.scaladsl.{Sink, Source}

import scala.collection.immutable.SortedMap