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How to get @DevBlackOps Terminal-Icons module working in PowerShell on Windows

Note: since version 0.1.1 of the module this now works in Windows PowerShell or PowerShell Core.

Download and install this version of Literation Mono Nerd Font which has been specifically fixed to be recognised as monospace on Windows:

https://github.com/haasosaurus/nerd-fonts/blob/regen-mono-font-fix/patched-fonts/LiberationMono/complete/Literation%20Mono%20Nerd%20Font%20Complete%20Mono%20Windows%20Compatible.ttf

(see this issue for more info: ryanoasis/nerd-fonts#269)

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

Installing V8 on a Mac

Prerequisites

Install Xcode (Avaliable on the Mac App Store)
Install Xcode Command Line Tools (Preferences > Downloads)
Install depot_tools
- $ git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
- $ nano ~/.zshrc
- Add path=('/path/to/depot_tools' $path)

Docker Hub 镜像加速器

国内从 Docker Hub 拉取镜像有时会遇到困难，此时可以配置镜像加速器。Docker 官方和国内很多云服务商都提供了国内加速器服务。

Dockerized 实践 https://github.com/y0ngb1n/dockerized

配置加速地址

Ubuntu 16.04+、Debian 8+、CentOS 7+

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

General rules

Follow standard conventions.
Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
Boy scout rule. Leave the campground cleaner than you found it.
Always find root cause. Always look for the root cause of a problem.

Design rules

Naty's FFXIV: Endwalker Add-ons, Plugins and Mods

Last Updated: Patch 6.58

Advanced Combat Tracker

The program which most people use for parsing in FFXIV and several other MMOs. For an open source alternative consider using IINACT though configuring it won't be covered here.

Options

Main Table Encounters
- General
  - Uncheck: Number of seconds to wait after the last combat action to begin a new encounter.
  - Uncheck: Number of seconds to wait after the last combat action to pause the encounter duration.

Plugins

A realistic RxJS app with diamond wiring

Consider the following user interface (inspired by Strava) for looking at time-series charts of network data:

Notes on this interface and my Rx implementation of it:

Each chart (stacked vertically) charts a different metric (latency, packet loss and throughput) but over the same time period.
As the user moves the mouse left and right on any chart, the vertical line (called the tracker) moves to track the mouse position on all charts. The number displayed in the gray box on the right is the value underneath the tracker for that metric.

	const UglifyJS = require('uglify-js');

	var symbolTable = {};
	var binaryOperations = {
	"+": (x, y) => x + y,
	"-": (x, y) => x - y,
	"": (x, y) => x y
	}
	var constexpr = new UglifyJS.TreeTransformer(null, function(node) {
	if (node instanceof UglifyJS.AST_Binary) {

	attribute highp vec4 a_vertex;
	attribute mediump vec2 a_texCoord;
	varying mediump vec2 UL;
	varying mediump vec2 UR;
	varying mediump vec2 DL;
	varying mediump vec2 DR;
	uniform highp mat4 u_pvmMatrix;
	uniform mediump vec2 u_displaySize;

	void main()

	import numpy as np
	from tqdm import trange


	def get_neighbour_matrix(x, L, R):
	dx = np.subtract.outer(x[:, 0], x[:, 0])
	dy = np.subtract.outer(x[:, 1], x[:, 1])
	dx[dx > (L / 2) 2] -= (L / 2) 2
	dy[dy > (L / 2) 2] -= (L / 2) 2
	pair_dist = dx 2 + dy 2