Yasuhiro SHIMIZU yshrsmz

Production-Ready(?) Native Single-Atom-State Purely Functional Reactive Composable UI Components, or PRNSAASPFRUICC

The native UI toolkits on Android and iOS are frustratingly imperative. Unfortunately, there has been little architecture evolution (unlike the web). However, nothing(ish) is stopping us from bolting something "nice" on top. By nice I mean single-atom-state purely functional reactive composable UI components. In this post, I'll explain what this title means, the inspiration behind the design of the framework, an example component, and dive a little into the framework's implementation.

Right now, there only exists a Kotlin (Android) implementation, but a Swift port will be relatively straightforward and will happen soon.

Let's break down the title:

"Production-Ready"

Inspired by dannyfritz/commit-message-emoji

Libraries

マージ済みのリモートブランチを全て削除

git branch -r --merged master | grep -v -e master -e develop | sed -e 's% *origin/%%' | xargs -I% git push --delete origin %

remote の master に merge済みの branch をすべて表示して
master と develop は消えてほしくないので除外して
origin/ を削除して
xargs （-I% % でブランチ名を渡しつつ、全て削除する）

Incremental DOM

Introducing Incremental DOM — Google Developers — Medium

Reactやvirtual-dom、Glimmer(Ember)などVirtual DOMの実装は色々あるが、これらのVirtual DOM実装には2つの問題がある

既存のテンプレート言語を利用していない(しにくい)
モバイルでのパフォーマンス、特にメモリに関しては大きすぎる

これらを解決するためにIncremental DOMと言うものを作っている(WIP)

ItemOffsetDecoration

public class ItemOffsetDecoration extends RecyclerView.ItemDecoration {

    private int mItemOffset;

    public ItemOffsetDecoration(int itemOffset) {
        mItemOffset = itemOffset;
    }

	import rx.Observable;
	import rx.Subscriber;
	import rx.Subscription;
	import rx.schedulers.Schedulers;

	public class UsingResourceSample {
	public static void main(String[] args) throws InterruptedException {
	for (int i = 0; i < 10; i++) {
	Observable.using(() -> {
	System.out.println("Getting @" + Thread.currentThread());

	/*
	* Copyright (C) 2016 Jeff Gilfelt.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software

Commit type	Emoji
Initial commit	🎉 `:tada:`
Version tag	🔖 `:bookmark:`
New feature	✨ `:sparkles:`
Bugfix	🐛 `:bug:`


	/**
	* This class allows to inject into objects through a base class,
	* so we don't have to repeat injection code everywhere.
	*
	* The performance drawback is about 0.013 ms per injection on a very slow device,
	* which is negligible in most cases.
	*
	* Example:
	* <pre>{@code

	import android.util.Log;
	import com.squareup.leakcanary.AnalysisResult;
	import com.squareup.leakcanary.DisplayLeakService;
	import com.squareup.leakcanary.HeapDump;
	import retrofit.RestAdapter;
	import retrofit.RetrofitError;
	import retrofit.http.Multipart;
	import retrofit.http.POST;
	import retrofit.http.Part;
	import retrofit.mime.TypedFile;