Soichi Takamura piglovesyou

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When using ArchLinux, I typically prefer to use an AUR helper like pacaur or yaourt to automate away the process of installing a community package.

Ansible's pacman module is great, but it doesn't support AUR packages or pacman's -U flag. Installing AUR packages with Ansible seemed to be left as an exercise to the user, and since AUR helpers do not come with a fresh Arch install, I

URLs into Indexed DB, via Service Workers

Let's say you're using Indexed DB for the offline data store for a catalog. One of the object stores contains product images. Wouldn't it be great if you could just have something like this in your catalog page?

<img src="indexeddb/database/store/id">

WTF Flow

[Flow][] static type checker is a wonderful attempt to bring [algebric data types][] to JS. It is still fairly new project and there for has few WTFs that can pull you down the rabbit hole. This document is attempt to document things that may seem like a WTF from the perspective of JS developer who tries to employ static type checker, or in other words, some items on the list may be very subjective & based on the background of the writer.

Polymorphic type that is a function

It is very likely that one will wind up using [Polymorphic functions][] to solve a more general problem. And if you define type alias for such a function you may be puzzled what is the right syntax should be used for such type definition.

Let's start with:

この記事~~のあの画像~~を見てﾋﾞﾋﾞｯと来てしまったので, 周りにいる人とErgodoxの購入検討をはじめました(随時更新)

購入できるところ

➜ FalbaTech

ErgoDox - FalbaTech

選んでいくスタイル。

ES Class Fields (Stage 2 now)

プライベートフィールドがハッシュな変態記法なのは何でなんだぜ？

class Point {
    #x;
    #y;
 constructor(x = 0, y = 0) {

	'use strict';

	var KEYS = {
	enter: 13,
	left: 37,
	right: 39,
	escape: 27,
	backspace: 8,
	comma: 188,
	shift: 16,

	var Rx = require('rx');
	var readline = require('readline');
	var fs = require('fs');

	var rl = readline.createInterface({
	input: fs.createReadStream('lines.txt')
	});

	var lines = Rx.Observable.fromEvent(rl, 'line')
	.takeUntil(Rx.Observable.fromEvent(rl, 'close'))

	// utility ----------------------------------------------------------
	function isGenerator(o) {
	return (typeof o === "object") && (typeof o.next === "function");
	}
	function isPromise(o) {
	return (typeof o === "object") && (typeof o.then === "function");
	}
	function isTag(o) {
	return (typeof o === "object") && (o.tag === "tag");
	}

	import { createCipheriv, createDecipheriv, randomBytes } from "crypto";

	const ENCRYPTION_KEY: string = process.env.ENCRYPTION_KEY \|\| ""; // Must be 256 bits (32 characters)
	const IV_LENGTH: number = 16; // For AES, this is always 16

	/**
	* Will generate valid encryption keys for use
	* Not used in the code below, but generate one and store it in ENV for your own purposes
	*/
	export function keyGen() {