ikhoon

## Templates for guava ##

.toList : convert to ImmutableList
  java.util.stream.Stream  ->  $expr$.collect(com.google.common.collect.ImmutableList.toImmutableList())

ikhoon

"armeria-common-worker-nio-2-1@4812" daemon prio=5 tid=0x17 nid=NA runnable
  java.lang.Thread.State: RUNNABLE
	  at com.linecorp.armeria.internal.Http2ObjectEncoder.doWriteData(Http2ObjectEncoder.java:93)
	  at com.linecorp.armeria.internal.HttpObjectEncoder.writeData(HttpObjectEncoder.java:85)
	  at com.linecorp.armeria.server.HttpResponseSubscriber.write(HttpResponseSubscriber.java:298)
	  at com.linecorp.armeria.server.HttpResponseSubscriber.onNext(HttpResponseSubscriber.java:227)
	  at com.linecorp.armeria.server.HttpResponseSubscriber.onNext(HttpResponseSubscriber.java:58)
	  at com.linecorp.armeria.common.stream.DefaultStreamMessage.notifySubscriberWithElements(DefaultStreamMessage.java:341)
	  at com.linecorp.armeria.common.stream.DefaultStreamMessage.notifySubscriber0(DefaultStreamMessage.java:319)
	  at com.linecorp.armeria.common.stream.DefaultStreamMessage.doRequest(DefaultStreamMessage.java:188)

ikhoon

package category

import java.util.concurrent.CompletableFuture

object Functors {
  // Monad 핵심: 많이 쓰인다.
  // A => B, F[A] => (A => B), => F[B]

  // Map Pair(A, B)
  // type class, 특정 타입에 기반된 행위

ikhoon

org.hamcrest:hamcrest:2.1
   variant "default" [
      org.gradle.status = release (not requested)
   ]

org.hamcrest:hamcrest:2.1
\--- org.awaitility:awaitility:4.0.1
     \--- allDependencies (requested org.awaitility:awaitility)

org.hamcrest:hamcrest-core:1.3

ikhoon

String foo() {
    return "abc";
}

String foo(Supplier<String> s) {
    System.out.println(s);
    return "abc " + s.get();
}

@Test

ikhoon

# git checkout remote pull request to local branch and track it with FZF-TMUX
# Requirements:
# - hub : https://github.com/github/hub
# - fzf-tmux : https://github.com/junegunn/fzf#fzf-tmux-script
pr() {
  local pr_list pr_id origin branch_name
  pr_list=$(cat /dev/null | hub pr list -f "%pC%>(8)%i%Creset %t @%au %l%n")
  result=$?
  if [[ $pr_list == *"github.com username:"* ]]; then
    echo "Please run 'hub pr list' to login GitHub"

ikhoon

#!/bin/bash

# zsh
echo "Installing zsh..."
chsh -s `which zsh`
curl -L https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh | sh

# homebrew, pip
echo "Installing homebrew, pip..."
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

ikhoon

Scala Workshop 2019

Basic? Scala

• Scala Exercises
• Functional Programming in Scala | Coursera
• Function
• Partial function
• Curry
• HOF
• for expression
• Future,

ikhoon

import org.reactivestreams.{Processor, Publisher, Subscriber, Subscription}

// 데이터 생성
val publisher = new Publisher[Int] {
  def subscribe(s: Subscriber[_ >: Int]) = {
    (1 to 100).foreach { x =>
      s.onNext(x)
    }
    s.onComplete()
  }

ikhoon

스칼라 FP 관련 책들

Functional Programming, Simplified

Scala Cookbook 저자가 씀, 개발 뿐만 아니라 FP의 역사와 같은 내용도 포함되어 있음

Functional Programming for Mortals

ENSIME 메인 메인테이너가 씀 - scalaz를 활용하여 FP로 프로그래밍을 할수 있는방법에 대해서 알려줌

Functional Programming in Scala

일명 빨간 책이라 불리며, scala + FP의 바이블 같은 존재, 하지만 어려움