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Andreas Söderlund ciscoheat

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@ciscoheat
ciscoheat / mental model.md
Created March 21, 2026 18:30
Railway operating system - DCI implementation

Mental Model: The Railway "Operating System" (Signals & Switches)

To understand how trains move fluently without colliding, stop thinking about tracks and start thinking about exclusive logical permissions.

1. The Core Concept: The "Virtual Bubble"

Trains cannot steer or stop quickly. Therefore, the system creates a "moving bubble" of protected space around every train.

  • The Block: The track is divided into segments (Blocks).
  • The Rule: Only one "ID" (train) can occupy a Block's "Memory Slot" at a time.
@ciscoheat
ciscoheat / DCI.instructions.md
Last active March 1, 2026 17:14
Agent instructions for DCI
name DCI
description Instructions for writing code with the DCI paradigm (Data, Context and Interaction)
applyTo **/*.ts

Instructions for Writing Code with the DCI Paradigm

DCI: Data, Context and Interaction: DCI is a programming paradigm that separates what the system is (domain knowledge/data models) from what the system does (behavior/functionality), bridging human mental models and code.

@ciscoheat
ciscoheat / +layout.server.ts
Last active September 1, 2023 21:05
Superforms with sveltekit-flash-message
export { load } from 'sveltekit-flash-message/server';
@ciscoheat
ciscoheat / +page.server.ts
Created July 5, 2023 20:43
Rate limiter for SvelteKit
import { RateLimiter } from 'sveltekit-rate-limiter/server';
import { superValidate } from '$lib/server';
import { setFlash } from 'sveltekit-flash-message/server';
import { fail } from '@sveltejs/kit';
import type { Actions } from '@sveltejs/kit';
import { schema as contactSchema } from './schema.js';
const limiter = new RateLimiter({
rates: {
@ciscoheat
ciscoheat / +page.server.ts
Created May 21, 2023 19:11
Checkbox validation test for Superforms
import type { Actions, PageServerLoad } from './$types';
import { superValidate } from 'sveltekit-superforms/server';
import { schema } from './schemas';
export const load = (async () => {
const form = await superValidate(schema);
return { form };
}) satisfies PageServerLoad;
export const actions = {
@ciscoheat
ciscoheat / rimraf.bat
Last active May 11, 2023 06:46
Batch file version of deleting large directories on Windows: https://stackoverflow.com/a/6208144/70894
@echo off
IF "%1" == "" (
echo Usage: rimraf ^[^/f^|-f^|--force^] dir
EXIT /B 1
)
IF "%1" == "/f" GOTO rimraf
IF "%1" == "/F" GOTO rimraf
IF "%1" == "-f" GOTO rimraf
@ciscoheat
ciscoheat / APIError.ts
Last active October 31, 2022 21:11
Javascript APIError class based on RFC7807
import type { Problem } from './Problem'
/**
* Javascript error class based on RFC7807.
* @link https://www.rfc-editor.org/rfc/rfc7807
*/
export class APIError extends Error implements Problem {
type: string;
title?: string;
status?: number;
@ciscoheat
ciscoheat / gist:ba6dc83f5c3999d172dd1901b9ae7eef
Created September 14, 2020 17:23
keybase.md
### Keybase proof
I hereby claim:
* I am ciscoheat on github.
* I am ciscoheat (https://keybase.io/ciscoheat) on keybase.
* I have a public key whose fingerprint is A969 E858 3A9F B743 FE09 8EC0 9E88 8154 F58D CFB3
To claim this, I am signing this object:
@ciscoheat
ciscoheat / Log.hx
Created July 24, 2018 07:46
Haxe logging with nodejs, js-kit and papertrail
#if nodejs
import haxe.Timer;
import js.Node;
import js.node.Path;
import js.npm.Winston;
import js.npm.winston.transports.Console;
import js.npm.winston.transports.File;
#if !no_papertrail
import js.npm.winston.transports.Papertrail;
#end
@ciscoheat
ciscoheat / keybase.md
Created February 22, 2017 16:30

Keybase proof

I hereby claim:

  • I am ciscoheat on github.
  • I am ciscoheat (https://keybase.io/ciscoheat) on keybase.
  • I have a public key whose fingerprint is E709 AD73 FCD9 B916 60D9 1D3B E9B6 A3C2 24D2 5822

To claim this, I am signing this object: