Athan kgryte

The links to the original on the internet are all down. Posting this here hoping others can easily find it. Of course, I don't own this content.

Error Handling in Node.js

Error handling is a pain, and it's easy to get by for a long time in Node.js without dealing with errors correctly. However, building robust Node.js applications requires dealing with errors properly, and it's not hard to learn how. If you're really impatient, skip down to the "Summary" section for a tl;dr.

This document will answer several questions that programmers new to Node.js often ask:

In functions that I write, when should I throw an error, and when should I emit it with a callback, event emitter, or something else?
What should my functions assume about their arguments? Should I check that they're the correct types? Should I check more specific constraints, like that an argument is non-null, is non-negative, looks like an IP address, or the like?

dynamic-typedarray

Introduction

This module wraps typed arrays with a minimal abstraction so that you can resize and append to them without reallocating and transferring data yourself.

Example

When initializing, you may pass an Array, a typed array, a size, or a dtype string. (Adding a dtype string will cast the data if necessary.) The following are equivalent ways to initialize a double precision dynamic typed array.

Minimal example making webpack and wasm/Emscripten work together.

Build instructions:

Clone this gist
npm install
npm start
Open http://localhost:8080
Look at console

Timetable

当日のタイムテーブル

11/24

Speakers's dinner 🔈

when	where	who	what
19:30	Shibuya?	Staff + Speaker + Sponsers	Dinner

Solving tricky problems in real-world code bases and the lessons learned along the way
Nodebots, IoT, and hardware hacking at large
Real-time web applications
Offline-first web applications
Developing for small screens, big screens, or no screen at all
A modern take on JavaScript (or Open Web) fundamentals
The intersection of art and code
Historical insights into the modern web
Crazy hacks and even crazier ideas
Developer tools, workflows, and best practices

	npm config set loglevel http
	npm config set progress false
	npm config set package-lock false
	npm config set save false
	mkdir -p ~/.config/configstore/
	printf '{"optOut": true,"lastUpdateCheck": 0}' > ~/.config/configstore/update-notifier-npm.json

	#!/usr/bin/env julia

	using Luxor, Colors

	Drawing(600, 500, "/tmp/stackad.png")
	origin()
	background("white")

	# background textifying, not for reading, fortunately
	function background_text(str_array, fontsz, beginning::Point, ending::Point)

	var electron = require('electron')

	electron.app.on('ready', function () {
	var win = new electron.BrowserWindow({
	width: 800,
	height: 600
	})

	win.loadURL('file://' + __dirname + '/index.html')
	win.toggleDevTools()

	## 'Hello world!' in x86_64 AT&T gas assembly in OS X.
	## To assemble $> as -arch x86_64 example3-helloworld.s -o example3-helloworld.o
	## To link: $> ld -arch x86_64 example3-helloworld.o -e _main -o example3-helloworld -lSystem
	.section __TEXT,__text
	.macosx_version_min 10, 12
	.globl _main
	_main:
	movq $0x2000004, %rax # write (system call $4 with $0x2000000 offset)
	movq $1, %rdi # write to stdout (fid 1)
	leaq L_.str(%rip), %rsi # set the register address of the start of the string