Mattias Erming erming

☕

Tinkering.

erming / useModel.js

Created July 13, 2025 13:55

useModel.js

	import _ from "lodash";
	import { useState, useLayoutEffect, useMemo } from "preact/hooks";

	export const useModel = (origin) => {
	const [model, setModel] = useState(origin);

	function reset() {
	setModel(_.cloneDeep(origin));
	}

erming / toJSON.cpp

Created January 4, 2025 02:33

	#include <iostream>

	void toJSON() {
	std::string json;

	int prependComma = 0;
	int rows = 0;

	auto _beginBlock = [&] () { prependComma = 1; rows = 0; };
	auto _endBlock = [&] () { prependComma = 0; rows = 0; };

erming / tryParseJson.js

Last active July 16, 2024 14:59

	function tryParseJson(string) {
	try {
	const output = JSON.parse(string);
	if (output && typeof output === "object") {
	return output;
	}
	} catch {}
	return null;
	}

erming / bench.sh

Last active April 8, 2023 16:43

	#!/bin/bash

	sudo apt-get -y install sysbench
	sysbench --test=cpu --cpu-max-prime=20000 run

erming / podman.sh

Created September 2, 2021 20:21

	#!/bin/bash

	. /etc/os-release

	echo "deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_${VERSION_ID}/ /" \| sudo tee /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
	curl -L "https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_${VERSION_ID}/Release.key" \| sudo apt-key add -

	sudo apt update
	sudo apt -y install podman

erming / sqlite.js

Created April 29, 2021 14:31

	const fastify = require("fastify");
	const sqlite3 = require("sqlite3");
	const { nanoid } = require("nanoid");

	const app = fastify();
	const db = new sqlite3.Database(":memory:");

	db.serialize();
	db.run(`
	CREATE TABLE data (

erming / swap.sh

Last active October 16, 2021 13:53

	#!/bin/bash

	echo "Begin..."

	sudo dd if=/dev/zero of=/swapfile bs=128M count=16
	sudo chmod 600 /swapfile
	sudo mkswap /swapfile
	sudo swapon /swapfile
	sudo swapon -s

erming / certbot.sh

Created January 11, 2021 08:01

	sudo apt update && sudo apt install certbot python-certbot-nginx
	sudo certbot --nginx

erming / grid.css

Created January 9, 2021 10:55

A simple CSS grid based on flexbox

erming / queue.h

Created June 16, 2020 17:12