Alex soal

Here is the best setup (I think so :D) for K-series Keychron keyboards on Linux.

Note: many newer Keychron keyboards use QMK as firmware and most tips here do not apply to them. Maybe the ones related to Bluetooth can be useful, but everything related to Apple's keyboard module (hid_apple) on Linux, won't work. As far as I know, all QMK-based boards use the hid_generic module instead. Examples of QMK-based boards are: Q, Q-Pro, V, K-Pro, etc.

Most of these commands have been tested on Ubuntu 20.04 and should also work on most Debian-based distributions. If a command happens not to work for you, take a look in the comment section.

Make Fn + F-keys work (NOT FOR QMK-BASED BOARDS)

Older Keychron keyboards (those not based on QMK) use the hid_apple driver on Linux, even in the Windows/Android mode, both in Bluetooth and Wired modes.

Configure systemd-resolved to use a specific DNS nameserver for a given domain

Use case

Given

I use a VPN to connect to my work network
I'm on a Linux computer that uses systemd-resolved
I have a work domain called example.com
example.com is hosted by both public and private DNS nameservers

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Have you Hyper for Great Good

So. You have become an Emacs wizard. And you find yourself aching for the simplicity that another modifier key would introduce into your life. Ah, the things you could do with Hyper.

Or maybe, you just want Hyper for another reason.

... Except everywhere you look, everyone's talking about .xmodmaps and xkbcomp, but you're using one of those fancy desktop managers. (Aka, not awesome, dwm, xmonad or something even more hipster) And because of that, you're lost in the sea of confusion that is trying to customize your keyboard mapping.

Gnome, Cinnamon, and KDE all use xkb.

It's not immediately obvious how to pull down the code for a PR and test it locally. But it's pretty easy. (This assumes you have a remote for the main repo named upstream.)

Getting the PR code

Make note of the PR number. For example, Rod's latest is PR #37: Psiphon-Labs/psiphon-tunnel-core#37
Fetch the PR's pseudo-branch (or bookmark or rev pointer whatever the word is), and give it a local branch name. Here we'll name it pr37:

$ git fetch upstream pull/37/head:pr37

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

Backend Development

node.js
- Installation paths: use one of these techniques to install node and npm without having to sudo.
- Node.js HOWTO: Install Node+NPM as user (not root) under Unix OSes
- Felix's Node.js Guide
- Creating a REST API using Node.js, Express, and MongoDB
- Node Cellar Sample Application with Backbone.js, Twitter Bootstrap, Node.js, Express, and MongoDB
- JavaScript Event Loop
Node.js for PHP programmers

	#include <efi.h>
	#include <efilib.h>

	#define SHELL_INTERFACE_PROTOCOL \
	{ \
	0x47c7b223, 0xc42a, 0x11d2, { 0x8e, 0x57, 0x0, 0xa0, 0xc9, 0x69, 0x72, \
	0x3b } \
	}

	typedef struct _EFI_SHELL_ARG_INFO {

	// Usually I use this in my app's config file, in case I need to disable all cache from the app
	// Cache is from `js-cache`, something like `import Cache from 'js-cache';`
	const cacheable = true,
	cache = new Cache();

	// On request, return the cached version, if any
	axios.interceptors.request.use(request => {

	// Only cache GET requests
	if (request.method === 'get' && cacheable) {

	#!/usr/bin/perl

	use strict;

	my $action = '';
	my $filename = '-';

	for my $arg (@ARGV){
	if ($arg eq "-e" or $arg eq "--export"){
	$action = 'export';