scala.md

Scala

• typesafe.com

• 자바 프로그래머를 위한 스칼라 튜토리얼

• Scala School!

  • 스칼라 학교!

• 5월의 나프다 웨비너 - 자바 개발자를 위한 스칼라 입문

• tryhelloworld.co.kr/courses/30분-scala

• Scala For Beginners

• Scala overview

• Scala Tutorials Part #1 - Getting Started with Scala

• Scala Tutorial for Java Programmers

• Scala Tutorial

• Scala World

• Learning Scala? Learn the Fundamentals First!

• [HQ] 케빈 TV - 시즌2 - 게릴라 방송 1회

• [HQ] 케빈 TV - 시즌2 - 게릴라 방송 2회

• [HQ] 케빈 TV 시즌2 - 게릴라 방송 3회 - Scala를 Script언어로 쓰기

• [Live] JVM 탈피한 Scala로 네이티브 코딩을??? (2017-01-14)

• [Live] Scala 만든 마틴 오더스키 교수님 만난 이야기 / Scala 약간 (2017-02-10)

• [Live] OOP로 Scala 약팔기 (2017-03-31)

• www.tutorialspoint.com/scala

• alvinalexander.com/scala

• Functional Programming Principles in Scala

• Functional Program Design in Scala

• Parallel programming

• The Neophyte's Guide to Scala

• Learn Scala with the Koans

• 5 Best Ways To Introduce Yourself To Scala in 2015

• scalawags.tv

• scala center - For open source. For education. A new not-for-profit center established at EPFL

• Nine Reasons to Try Scala

• Scala Exercises

• Dick Wall on his Scala Course

• 라 스칼라 코딩단

• Debugging implicits

• ScalaDays 2015 San Francisco

  • The Scalactic Way
  • SF Scala: Bruce Eckel, Rethinking Scala

• Scala Days Amsterdam 2015

  • My takeaways from ScalaDays 2015 in Amsterdam

• Scala Days Conferences

  • Keynote: Scala's Road Ahead - by Martin Odersky
    • Scala The Road Ahead

• Sudoku Solver in Scala

• Ask HN: Why do people have a hatred for Scala?

• 3 PROGRAMMING LANGUAGES TO REPLACE SHELL SCRIPTING

• Stream processing backend design

• This week in #Scala

  • This week in #Scala (06/07/2015)
  • This week in #Scala (20/04/2015)
  • This week in #Scala (04/05/2015)

• Zoom: Reactive Programming with Zookeeper

• Slick 2 Examples: Querying and Modifying Data

• SCALA & DESIGN PATTERNS

  • Code : Factory Pattern + Decorator Pattern

• Micro-Services: Clojure vs Scala

• Transform your State / Err - A concrete example of parser combinators, state monad and monad transformers in Scala, using scala-parser-combinators and scalaz

• DataCritics (1) – Scala as the Next Influential Programming Language

• Testing styles in ScalaTest

• Typelevel quicksort in Scala

• scala.bythebay.io

  • Scala meetup dick wall

• DataCritics (1) – Scala as the Next Influential Programming Language

• The differences between a Scala Future and a Java Thread

• Why go for Scala ?

• Why Scala will be the next big thing

• 스칼라를 통한 다양한 언어의 패러다임 맛보기

• Scala development in Vim

• ScalaML

  • 01 Getting Started
  • 함수형 프로그래밍이란?
  • Scala
  • psygrammer.github.io/ScalaML

• Scala: The Industrial Parts

• Scala Open Source Projecr

• Writing AWS Lambda Functions in Scala

• Church Rosser 이론 (Lambda calculus)에 대한 링크 펌질

• 콘솔에서 코드 붙여서 테스트하기 (paste)

• Keeping Scala Simple

• Useful techniques in Scala: Abstracting over function's arity

• JVM Backend and Optimizer in Scala 2.12

• Feature Engineering at Scale With Spark

• How Scala compares with 20 other programming languages according to Reddit analysis

• Automated reasoning in F#, Scala, Haskell, C++, and Julia

• The Point of Pattern Matching in Scala

• 같은 함수의 여러가지 표현

• Ant colony optimization in Scala

• SBTB 2015: Li Haoyi, A Better Scala REPL?

• Dependency injection in scala - Have Your Cake and Comprehend It Too

• Adventures in financial and software engineering

• Scala Experimental Platform Dotty Bootstraps

• ScalaSyd EP39 - 01. i18n à la gettext by Ngoc Dao (Aug 2015)

  • Episode 42

• ScalaSyd Ep57

• 함수형 프로그래밍 언어 스칼라(Scala) 소개

• [Technology Inside] Parallel Programming in Scala

• Parallel Programming and Applicative in Scala

• Covariance / Contravariance

  • covariance(공변성)는 좀더 세부적인 타입으로, 구체적 변화
    • List타입에 대해 Cons나 Nil은 구체적 변화. Cons와 Nil은 둘다 List타입
  • contravariance(반공변성)는 좀더 일반적인 타입으로, 일반적 변화
    • 반대로 List는 Cons에 대해 그리고 Nil에 대해 일반적 변화
  • Gen[T] 라는 제네릭 타입이 있을 때, 상속 관계가 있는 두 타입 A와 B를 인자로 Gen을 구체화 시킨 타입 Gen[A]와 Gen[B] 사이에 어떤 리스코프 치환 관계가 성립하느냐는 것
    • Gen[A]와 Gen[B]의 치환관계가 달라질 수밖에 없음
    • List[Object] 가 들어갈 위치에 List[String]을 넣어도 되느냐? Array[Object]대신 Array[String]를 넣어도 되느냐? String -> Unit 라는 함수 대신에 Object -> Unit 타입의 함수를 넣어도 되느냐? 역으로, Object -> Unit 타입의 함수 대신 Object -> Unit 타입의 함수를 넣을 수 있느냐 등의 질문이 일반적인 질문을 구체적인 타입으로 바꾼 것
    • 판정 방법은 각 타입이 제공하는 연산(또는 메소드)이 대치한 타입에서도 유의미한지를 검사
      • 그걸 컴파일러가 검사하는 방법이 + - 로 표시해서 알아내는 방법
    • 공변(상속 관계가 함께 변함)은 인자 타입의 상속관계가 제네릭타입에서 그대로 유지
    • 반공변(상속 관계가 반대로 변함)은 인자 타입의 상속 관계가 제네릭 타입에서 반대
    • 무공변은 인자 타입의 상속관계가 있더라도 제네릭 타입에선 아무 상속 관계가 없어짐
  • 공변성/반공변성(Variance)
  • Covariance and contravariance in Scala

• Strategic Scala Style: Principle of Least Power

• DB to JSON with a microservice

• SCALA NATIVE Your favourite language gets closer to bare metal

  • Scala goes Native
  • Welcome to Scala Native

• Effective Scala (SpringCamp 2013)

  • [SpringCamp2013] Effective Scala

• Databricks Scala Guide

  • Databricks Scala Guide (한글)

• Moving from Java to Scala - One year later...

• From Java to Scala: A Case Study

• flatMap(Oslo) 2016 컨퍼런스

• blog.higher-order.com Functional Programming in Scala 저자 블로그

• cats scalaz에서 cats로 대세

• github.com/alexandru/scala-best-practices 스칼라에서 하지 말아야 될것들

• global execution context

• scala meta로 변경될 scala macro

• underscore.io ebook

• index.scala-lang.org - 스칼라 라이브러리 검색

• 1ambda.github.io/21/scala/

• scala-exercises.org - 스칼라 관련 문제를 온라인으로 풀면서 공부

• shapeless 관련 설명

• 최근에 가장 핫했던 스칼라 이슈

  • shapeless 만든 Miles Sabin이 이를 해결한 과정 동영상
  • 해당 이슈 관련 PR

• Learning Materials for generic & dependent programming using shapeless

• 스프링캠프 2016[B-2]: SOURCE OF SLIPP.MAP (JAVA =〉SCALA)

• scalac 옵션

  scalacOptions ++= Seq(
    "-target:jvm-1.8",
    "-encoding", "UTF-8",
    "-unchecked",
    "-deprecation",
    "-Xfuture",
    "-Yno-adapted-args",
    "-Ywarn-dead-code",
    "-Ywarn-numeric-widen",
    "-Ywarn-value-discard",
    "-Ywarn-unused"
  )
  

• We Won! How Scala Conquered the Big Data World

• Web Framework Benchmarks - JSON serialization

• hamait.tistory.com/category/Scala

  • 스칼라를 이용한 개발 이후..

• 스칼라 기반 블랙잭 게임 모델링 연습

• [도사티비] 함수형 프로그래밍 맛보기

• [도사티비] 스칼라 함수 활용하기

• [도사티비] 스칼라 함수와 컬렉션

• scala.bythebay.io: Sasha Ovsankin, New Metrics Engine to Help Drive UBER

• Making Implicits Explicit — Scala

• 스칼라의 도입을 회고하며

• S-99: Ninety-Nine Scala Problems

• practice - install scala notebook on jupyter

• Abstration and Polymorphism (using Scala)

• Intro to Functional Streams for Scala (FS2)

• Intro to Functional Streams for Scala (FS2) - Part 2: Chunks & Pipes

• Intro to FS2 - Part 3: Concurrency

• Lawful Asynchronous Programming — Daniel Spiewak

• Daniel Spiewak: Functional Async on the JVM - λC Winter Retreat 2017

• Map, Flatmap, and Reduce Are Your New Best Friends

• Marconi Lanna - Elegant and Powerful Scala One-liners

Actor

• Actor Messaging platform
• Typed Actors - compile-time typechecked akka actors
• [Simple Threading with Scala Actors]https://www.youtube.com/watch?v=bNLeo36pFls)
• Introduction to the Actor Model for Concurrent Computation: Tech Talks @ AppNexus
• Hewitt, Meijer and Szyperski: The Actor Model (everything you wanted to know...)
• Introduction to jkka Actors with Java 8
• Programming with Actors (part 1)
• Programming with Actors (part 2)
• Reactive Mistakes: Flat Actor Hierarchies

Akka

• Akka HTTP
  • akka-http-extensions 0.0.1 released
  • Akka HTTP server backend (experimental)
• Akka HTTP — The What, Why and How
• The Routing DSL
• Understanding Paxos using Scala and Akka Actors
• Akka.NET: the Reactive Story Continues on the Microsoft CLR - See more at: http://typesafe.com/blog/akkanet-the-reactive-story-continues-on-the-microsoft-clr#sthash.GMwHTmen.dpuf
• Easy Scalability with Akka
• REACTIVE STREAMS FOR APACHE KAFKA
• Handle asynchronous results of external dependencies in Akka actors
• Asynchronous & Non-Blocking Scala - A look at Netty & NIO for Async Networking via Scala
• REACTIVE STREAMS FOR APACHE KAFKA
• Quasar and Akka – a Comparison
• Quasar and Akka – a Comparison
• Why we picked AKKA cluster as our microservice framework
• How Akka Streams can be used to process the Wikidata dump in parallel and using constant memory with just your laptop
• 데이터 분석을 위한 Scala by VCNC
• Concurrent sharing of “data in motion” across clusters with CRDTs in Akka Distributed Data
• Akka Streams: Streaming Data Transformation à la Carte
• 임백준의 아카 시작하기 : Akka 개념 잡기
• 아카(Akka) 시작하기 교육후기
• 스프링캠프 2016[B-1]: AKKA로 구성한 추천시스템, 검색엔진급
• 삼성 SDS TechTonic 임백준의 실전 아카
• 임백준의 AKKA 시작하기 1
• 임백준의 AKKA 시작하기 강의 2
• 임백준의 AKKA 시작하기 강의 3
• 임백준의 AKKA 시작하기 4
• Akka stream 을 활용한 reliable message stream 처리
• PayPal 은 어떻게 하루에 10억 request 를 단 8개 VM 으로 처리하는가?
  • squbs: A New, Reactive Way for PayPal to Build Applications
  • squbs - Akka/Spray for Large-Scale Production Deployments http://paypal.github.io/squbs
• hamait.tistory.com/category/Akka
• Akka and a Simple Actor Example (in Scala)
• Simple Actor Example 2 (in Scala with Akka)
• Communicating Actors (in Scala with Akka)
• The Ask Pattern (in Scala with Akka)
• Actor Scheduling (in Scala with Akka)
• Akka Details
• Using Actors (in Scala with Akka)
• The Actor Hierarchy (in Scala with Akka)
• Routers (in Scala with Akka)
• Routers 2 (in Scala with Akka)
• Actor Life Cycle (in Scala with Akka)
• Actor URLs (in Scala with Akka)
• Actor Supervision (in Scala with Akka)
• Communicating Actors (in Scala with Akka)
• Implementing Microservices with Scala and Akka - by Vaughn Vernon
• Reactive Microservices with Akka and Docker by Heiko Seeberger
• Reactive Architecture with Play, Akka, and Scala - Henrik Engstrom (Typesafe)
• Introduction to Reactive: A Hands-on Workshop with Play and Akka
• Introduction to Akka by Yannick De Turck
• Technology Hour - Implementing the Reactive Manifesto with Akka - Adam Warski
• A tour of the (advanced) Akka features in 60 minutes by Johan Janssen
• Event-Sourced Architectures with Akka
• Hands on Introduction to Distributed Systems Concepts with Akka Clustering - by David Russell
• Sane Sharding with Akka Cluster - Michal Plachta
• "The Road to Akka Cluster, and Beyond" by Jonas Bonér
• Akka - cluster - etcd by Maciej Biłas at Scalar Conf 2016
• Simple Akka Clustering
• Learning Akka: The Course Overview | packtpub.com
• Learning Akka: Actor System and Hierarchical Structure | packtpub.com
• Resilient Applications with Akka Persistence
• Up, Up, and Out: Scaling Software with Akka
• David Russell - A Literally-Hands-On Introduction to Distributed Systems with Akka Cluster
• Reactive Microservices with Akka and Docker - by Heiko Seeberger
• Akka and Kafka Webinar Build Powerful Concurrent & Distributed Applications
• Reactive Streams principles applied in Akka Streams by Eric Loots
• Effective Akka HTTP by Johannes Rudolph

API

• practice
  • example :: & : * _*
  • permutation by recursive call
  • bitmap by for comprehension
• foldLeft, fodRight, reduceLeft, reduceRight, scanLeft, scanRight 함수 예제
• case class
  • Read case class object from string in Scala (something like Haskell's “read” typeclass)
  • case object와 object의 차이
• Double/Float
  • Scala Doubles, and Precision BigDecimal(num).setScale(2, * * BigDecimal.RoundingMode.HALF_UP).toFloat/toDouble
• DSL
  • DSL processing in Scala
• DynamicVariable 예제
• future
  • A LITTLE GUIDE ON USING FUTURES FOR WEB DEVELOPERS
  • Reactive 프로그래밍 - Hello world
• List
  • List.fill([length])([element])
  • 리스트 비교하기 — 스칼라
• Map
  • Best way to merge two maps and sum the values of same key?
  • json > Map
    • Scala Convert a string into a map
    • GSON with Scala: Scala scala.collection.mutable.HashMap vs. java.util.HashMap didn't work
    • GSON with Scala - Unable to invoke no-args constructor for scala.collection.immutable.Map didn't work
    • Scala Gson Serializer
• Option
  • Java 소스를 Scala로 전환할 때 null 값 처리는?
  • Java의 break, continue 구문 대신 Scala의 Option을 사용해 구현해 보기
• par
  • 병렬 콜렉션 (par collection)
• scalaz
  • Easy Performance Wins With Scalaz
  • learning Scalaz
  • learning Scalaz — Combined Pages
  • Scalaz for the Rest of Us at Yelp
  • Scalaz - The Good Parts
  • Introduction to Scalaz
  • An Introduction to Scalaz-Stream
  • Scalaz State Monad
  • Learning Scalaz
  • A Skeptic's Look at scalaz' "Gateway Drugs"
  • LambdaConf 2015 - A Skeptic's Look at Scalaz Gateway Drugs Brendan McAdams
  • LambdaConf 2015 - Scalaz 102 Level Up Your Scalaz Foo! Colt Frederickson
  • LambdaConf 2015 - Scalaz Streams A Functional Approach to Compositional... Derek Chen Becker
  • Daniel Spiewak on scalaz-streams (TimesOpen: Reactive Programming)
  • Scalaz-Stream Masterclass - NE Scala 2016
  • SF Scala, Adelbert Chang: Scalaz
  • Scalaz
  • Scalaz 7 with Lars Hupel
  • Cool toolz in the Scalaz and Cats toolboxes by Jan Pustelnik at Scalar Conf 2016
• String
  • String to Json
    • GsonJson.scala
• Reduce, fold or scan (Left/Right)?
• test
  • Testing without mocking in Scala
• trait
  • Everything You Ever Wanted to Know About Sealed Traits in Scala
• underscore
  • 변수를 사용하기 위한 underscore

Book

• fpinscala Code, exercises, answers, and hints to go along with the book "Functional Programming in Scala" http://manning.com/bjarnason

IntelliJ

• Scala로 만들어본 이름점

Library

• The Top 100 Scala Libraries in 2015 – Based on 64,562 GitHub Libraries
• Abstract Algebra for Scala https://twitter.com/scalding
  • What is Twitter's interest in abstract algebra (with algebird)?
• Scala macros to generate RESTful Models
• Ammonite enables shell-like scripting in the Scala programming language
• BooPickle 0.1.0 preview released - fast binary serialization for both Scala and Scala.js
• Cats - An Introduction to Cats
  • Cats - A new library for functional programming in Scala
  • LambdaConf 2015 - Cats — A Fresh Look at Functional Programming in Scala Mike Stew O'Connor
• Conditional logging with Logback in Scala
• curiodb - Distributed & Persistent Redis Clone built with Scala & Akka
• Diffy - Find potential bugs in your services with Diffy https://twitter.com/diffyproject
  • 트위터, 소스코드 오류 검사기 오픈소스로 공개
• ENSIME - Enhanced Scala and java Interaction Mode for text Editors
• Finagle
  • 스프링캠프 2016[B-4]: SCALA와 FINAGLE을 사용한 MICRO SERVICE ARCHITECTURE 구현하기
  • Netty at Twitter with Finagle
• Finatra
  • 4 Sinatra inspired frameworks on the JVM that will boost your productivity
  • Finatra Mysql with Quill and Slick
  • Finatra Mysql Seed Project - Finatra + TypesafeConfig + Swagger + Slick + Quill with Mysql seed Project
• Funnel is a distributed monitoring system based on a lightweight streaming protocol
• JNA4Scala
• JNI
  • Allocating memory (and strings) from C, with standard finalizers
• KeystoneML - Machine Learning Pipeline
• Kryo
  • Spark RDD save Object as Kryo file
• Metascala - A JVM written in Scala
• nscala-time - A new Scala wrapper for Joda Time. This project forked from scala-time since it seems that scala-time is no longer maintained
• ReactiveX - An API for asynchronous programming with observable streams
• renesca - Scala library for the Neo4j REST API
  • renesca-magic - typesafe graph database schemas in Scala for Neo4j
• Sangria - Scala GraphQL Implementation
• scala audio file - Minimal Scala library to process audio files
  • Beat Detection Algorithms (Part 1)
• SCALA CLIPPY, HELPING YOU UNDERSTAND WHAT THE COMPILER ERRORS ACTUALLY MEAN
• Scalameter - Automate your performance testing today
  • scalameter-examples - Self-contained simple example projects that use specific ScalaMeter features
  • 마이크로 벤치마킹 툴 - scala meter 예제
• Scala Native Api for Linux
• scala-native-access
• scala-parser-combinators
  • The Magic Behind Parser Combinators
  • csv4s - csv parser library and executable jar for scala
  • Scala Parser Combinator로 CSV 파싱하기
• Scalatra
  • 4 Sinatra inspired frameworks on the JVM that will boost your productivity
• ScaleChain - A customizable blockchain implementation for private blockchains
• ScalaTest
  • scalatest에서 Exception 처리
• scala-time - Basic Scala utilities allowing for easier use of java.time APIs
• scalding
  • Scalding: Scala로 하는 Big Data Processing
• ScalikeJDBC Just write SQL and get things done!
• Scorex - Ultra-compact cryptocurrency engine for hacking around within just 4K lines of Scala code
• shapeless - Generic programming for Scala
• Skinny-ORM
• slick - Functional Relational Mapping for Scala
• spray.io
  • Typesafe Reactive Platform Acquires New High-Performance HTTP Foundation
  • spray-routing
• tut - doc/tutorial generator for scala
  • tut

Monad

• Monad Programming with Scala Future
• Arrows, Monads and Kleisli – part I
• ScalaSyd 40 - 1. Functor, Apply, Applicative, Bind and Monad by Oliver Daff (Sep 2015)
• Deriving the Free Monad
• Asynchronous Programming and Monad Transformers in Scala
• Scala Monads: Declutter Your Code With Monadic Design
• Writer monad State 모나드 예제

Monoids

• About those Monoids
• Learning Algebird Monoids with REPL
• Monoids
• Monadic IO: Laziness Makes You Free
• SCALAZ: Monoid applications
• scalablitz

Play

• The Ultimate Guide to Getting Started with the Play Framework
• Play 2.4 - A sneak peek
• How to Play at Work - A Play Framework Tutorial
• Anorm 2.4 review
• ReactJS Tutorial with Play, Scala and WebJars
• A few more learnings with Play Framework
• Play Framework: async I/O without the thread pool and callback hell
• hamait.tistory.com/category/PlayFramework2
  • Action 과 Action.async 의 차이점
• Understanding Play2 Iteratees for Normal Humans
• APIs and Microservices with Scala and Play
• Full Stack Scala with the Play Framework and Scala.js by Greg Dorrell

SBT

• classpaths
• Customizing paths
• Library dependencies
• Problem with Scala build
• sbt the easy way
• How to use sbt from behind proxy?
  • SBT_OPTS="-Dhttp.proxyHost=proxyhost -Dhttp.proxyPort=9999 * -Dhttps.proxyHost=proxyhost -Dhttps.proxyPort=9999" sbt
  • JAVA_OPTS="$JAVA_OPTS -Dhttp.proxyHost=proxyhost -Dhttp.proxyPort=9999 * -Dhttps.proxyHost=proxyhost -Dhttps.proxyPort=9999" sbt
• How to include an external jar file into the jar with package?
• [Live] Maven to SBT 컨버터 라이브 코딩 #1 게릴라 방송 (2017-04-03)
• [Live] Maven to SBT 컨버터 라이브 코딩 #2 게릴라 방송 (2017-04-04)
• [Live] Maven to SBT 컨버터 #3 / Scala로 스크립팅 (2017-04-07)

Scala.js

• New Scala.js tutorial for building Single Page Applications with React
• Conway's Game of Life in ScalaJS
• Sri (Scala React interface) is a scalajs library to build truly native cross platform (mobile (ios and android) and web) applications

Type

• typeclassopedia.bitbucket.org - typeclass 사용
• And that is why static types matter
• Value, Type, Kind & Orders
• Scala’s Types of Types
• Type Level Programming in Scala step by step
• Type safe SalesForce Queries (SOQL) in Scala
• type lambda function에 대한 lambda말고 type lambda가 존재. type parameter가 들어갈 자리에 lambda 표현식과 유사한 표현을 사용 가능. ({ type L[x] = Either[E, x] })#L 를 사용해야 하는 이유
• jvm의 type erasure를 스칼라에서 피할수 있는 팁
• Typechecking SQL in Slick and doobie
• Returning the "Current" Type in Scala
  • tut - doc/tutorial generator for scala
  • doobie is a pure functional JDBC layer for Scala
• F-bounded polymorphism / recursive types
• type level programming
• Introduction to Algebraic Types in Scala