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André Staltz - How to debug RxJS code
A common question from beginners learning RxJS is “how do I debug this?”. The short answer is: you have to depend mostly on drawing diagrams on paper and adding .do(x => console.log(x)) after operators, but it will get a lot better with the arrival of RxJS 5. Now starts the long answer. Once you have Observables everywhere and RxJS is taking over control flow, the traditional debugger stops being
Asynchronous Iterative & Recursive Patterns for Node.js - Part 1
04 Oct 2015 Asynchronous Iterative & Recursive Patterns for Node.js - Part 1 Introduction If any thing made node.js as popular as it is now, it’d would its non-blocking asynchronous I/O calls. You baiscally call an I/O routine, give it a function to call back when your operation is done and you go on continuing whatever business you still have without waiting (blocking) for that operation to finis
Should I use React.createClass, ES6 Classes or stateless functional components? - James K Nelson
So you’ve decided to build a React component. You know what it will do, what it’s called, and where it’ll go. But when you open your editor and go to write the first line, you’re confronted with the decision between three different ways to declare it? Why three? And which one should you use? Luckily, this decision doesn’t need to be a hindrance. In fact, with a little history and two simple rules,
Vjeux » Challenge: Best JavaScript Setup for Quick Prototyping
Yesterday, there was a big discussion on Twitter on how hard it is to start hacking on a js project. One comment by Dan Abramov struck me in particular: "Right: don’t use tools, face a problem, choose a tool or roll your own. Wrong: learn tools that don’t solve your problems, hate the tools." This is spot on. All the solutions presented in this thread do not solve the problems I have when I'm hack
ルールプリセットを使ってお手軽にtextlint入門
textlintはルールで拡張出来る自然言語向けのLintツールです。 textlint 5.1.0でルールのプリセットをサポートしました。 ルール、プリセット、プラグインは以下のような関係です。 rule いわゆるルール rule-preset ルールをまとめたもの plugin ルールとプロセッサ(拡張機能)を持ってる textlintはデフォルトでは一つもルールを持っていません。 そのため、どのルールを入れたらいいか迷った場合に、誰かがまとめてくれたプリセットをとりあえず入れれば、とりあえず文章のチェックが出来るようになります。 textlintの使い方は以下で解説しているのと基本的に同じですが、今回はプリセットの使い方を紹介します。 textlintで日本語の文章をチェックする | Web Scratch インストール textlint本体と2つのプリセットをインストールしてみます
GitHub - KittyGiraudel/SJSJ: Simplified JavaScript Jargon
Simplified JavaScript Jargon (short SJSJ) is a community-driven attempt at explaining the loads of buzzwords making the current JavaScript ecosystem in a few simple words. The idea is not to replace individual documentations, but to act as some kind of glossary that can be easily referenced. If you are willing to contribute, open a pull request to complete, update or fill in a section. Thank you f
Dissection of Flux architecture or how to write your own
The Flux implementation discussed in this article is available here github.com/krasimir/fluxiny. Feel free to use it in a browser directly or as a npm dependency. I’m obsessed by making my code simpler. I didn’t say smaller because having less code doesn’t mean that is simple and easy to work with. I believe that big part of the problems in the software industry come from the unnecessary complexit
Building for HTTP/2
25 Nov 2015 edit Earlier this year, I got the chance to speak with Google's Ilya Grigorik about HTTP/2 for the 1.10 episode of the TTL Podcast. It was a great primer for me on how HTTP/2 works and what it means for how we build the web, but it wasn't until more recently that I started to think about what it means for how we build the web — that is, how we generate and deploy the HTML, CSS, and JS
地図タイルについて - smellman's Broken Diary
どうも、生きてます。 今回はFOSS4G Advent Calendar 2015 (1個目)の最後となる記事です。 今回書く内容はタイトルどおり、いまさらだけど地図タイルについていろいろ解説して実際に実装をしてみようというものになっています。 地図エンジニアで無い人でも興味を持っていただき、沼感を感じていただけたらと思います。 なお、先に書いておくと精度とかそういう話はほっておいてるので非常に雑です。 地図タイルって何？ まずは基本となる地図タイルについてご紹介します。 そもそも地図を使ったクライアントソフトウェアとしては古くからGIS(Geographic Information System)という種類のソフトが多く開発されていました。 私も大学生の時に留年して半年間休学していた間だけとある地図会社でアルバイトで実際にVisual BasicでGISの開発をしていました。 2002年
GitHub - vega/datalib: JavaScript data utility library.
NOTE: Datalib is no longer being actively maintained. The Arquero library provides similar functionality plus much more. In addition, Vega now includes its own data utilities in the vega-util and vega-statistics packages. Datalib is a JavaScript data utility library. It provides facilities for data loading, type inference, common statistics, and string templates. While datalib was created to power
GitHub - rosiejs/rosie: factory for building JavaScript objects, mostly useful for setting up test data. Inspired by factory_girl
Factory.define('game') .sequence('id') .attr('is_over', false) .attr('created_at', () => new Date()) .attr('random_seed', () => Math.random()) // Default to two players. If players were given, fill in // whatever attributes might be missing. .attr('players', ['players'], (players) => { if (!players) { players = [{}, {}]; } return players.map((data) => Factory.attributes('player', data)); }); Facto
"Real" Mixins with JavaScript Classes
Mixins and Javascript: The Good, the Bad, and the Ugly.Mixins and JavaScript are a like the classic Clint Eastwood movie. The good is that composing objects out of small pieces of implementation is even possible due to JavaScript's flexible nature, and that mixins are fairly popular in certain circles. The bad is a long list: there's no common idea of what the concept of a mixin even is in JavaScr
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19. The Node.js Future | CodeLunch.fm
GitHub - loverajoel/jstips: This is about useful JS tips!
2015年のJavaScript開発者アンケートまとめ - Qiita
GitHub - FGRibreau/match-when: :shell: Pattern matching for modern JavaScript
GitHub - sdgluck/catch-and-match: :rugby_football: Assert an error thrown (a)synchronously by a function.
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document.cookieをlocalStorageにする - Qiita
