JonathanTurnock

@startuml Hexagonal Architecture Example

title Hexagonal Architecture Example

package App {
    class ApplicationContext {
        + userRepository: UserRepository

JonathanTurnock

import { Box, render, Text, useStdout } from "ink";
import { useCallback, useEffect, useState } from "react";
import { debounceTime, filter, firstValueFrom, fromEvent, map } from "rxjs";

export function useScreenSize() {
	const { stdout } = useStdout();

	const getSize = useCallback(() => ({ height: stdout.rows, width: stdout.columns }), [stdout]);
	const [size, setSize] = useState(getSize);

JonathanTurnock

.graph text {
	font-family: sans-serif;
	stroke: white;
	paint-order: stroke;
	stroke-width: 3;
	stroke-linecap: square;
}

JonathanTurnock

import { randomUUID } from "node:crypto";
import * as os from "os";
import Aigle from "aigle";
import { UtilityProcess, utilityProcess } from "electron";
import { compact, flatten, values } from "lodash";
import { z } from "zod";
import { trpc } from "../trpc";

type ServerEntry = {
	id: string;

JonathanTurnock

#!/usr/bin/env bash

set -e

echo "🔧 Updating system..."
pacman -Syuu --noconfirm

echo "📦 Installing dependencies..."
pacman -S --noconfirm --needed mingw-w64-x86_64-lua51 mingw-w64-x86_64-gcc git make unzip zip tar gzip p7zip curl wget

JonathanTurnock

🛠 Error Handling in Lua: The Idiomatic Way

Lua is known for being lightweight, embeddable, and flexible—and its approach to error handling is no different. Whether you're writing a game script, a plugin, or a CLI tool, understanding how Lua handles errors is essential for writing clean, maintainable code.

In this article, we'll explore:

• The basic mechanisms of error handling in Lua
• When to use error() vs returning nil, err
• Best practices for writing robust functions and libraries

JonathanTurnock

import { RpcClient } from "./rpc.ts"
import type { RpcAPI } from "./router.ts"

export const client = new RpcClient<RpcAPI>();

const foo = rpcClient.get("foo");
  
foo.getFoo().then(console.log)

JonathanTurnock

To Display the current git commit hash execute the following snipped:

git rev-parse --short HEAD

To Extract this to use in a Jenkinsfile use the sh function with the script and returnStdout parameter set to true:

def commitHash = sh(script: 'git rev-parse --short HEAD', returnStdout: true)

JonathanTurnock

// App.js
import React from "react";
import { observer } from "mobx-react-lite";
import { counterStore } from "./store";

const App = observer(() => {
  return (
    <div>
      <h1>{counterStore.count}</h1>
      <button onClick={() => counterStore.increment()}>Increment</button>

JonathanTurnock

1. Geographic Coordinates

The most recognized method to pinpoint a location. It uses:

• Latitude (lat): Specifies how far north or south a point is from the Equator.
• Longitude (lon): Details how far east or west a point is from the Prime Meridian.

2. Cartesian Coordinates

Often employed in computer graphics and mathematics:

• 2D Cartesian:
  • x: Represents the horizontal axis (often east-west direction).
• y: Represents the vertical axis (often north-south direction).