rofrol

Linux Virtual Machines with Private Network on an Apple M1 Device

Background

The aim was to be able to:

1. Run multiple Linux VMs on an Apple M1/ARM device
2. Use Apple's HVF for native performance speeds
3. Configure VMs to allow network access to each other
4. Configure VMs to allow access to the internet
5. Not rely on custom modifications of software

rofrol

#!/bin/bash
set -o allexport
source .env
set +o allexport

cd webapp && npm run build && cd .. &&
	ssh ${SSH_USER}@${SSH_HOST} -p $SSH_PORT "mkdir -p /var/www/example.com/webapp" &&
	rsync -avzr --delete --filter=':- .gitignore' -e 'ssh -p '${SSH_PORT} webapp/dist/webapp/ ${SSH_USER}@${SSH_HOST}:/var/www/example.com/webapp/

rofrol

const std = @import("std");

fn splice(src_rd: anytype, dst_wr: anytype, comptime buf_len: usize, lim: usize) !void {
    var buf: [buf_len]u8 = undefined;
    var left = lim;
    while (true) {
        const len = try src_rd.read(buf[0..@min(left, buf.len)]);
        if (len == 0) break;
        left = try std.math.sub(usize, left, len);
        try dst_wr.writeAll(buf[0..len]);

rofrol

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rofrol

Reverse Mouse Wheel scroll in Windows 11

Chose between natural mode like MacOS or Windows default mode.

Step 1: Open Windows PowerShell in Administrator Mode.

You can do this by going to Start Menu, type PowerShell, and click Run as Administrator.

Step 2: Copy the following code and paste it in the command line of Windows PowerShell:

$mode = Read-host "How do you like your mouse scroll (0 or 1)?"; Get-PnpDevice -Class Mouse -PresentOnly -Status OK | ForEach-Object { "$($_.Name): $($_.DeviceID)"; Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Enum\$($_.DeviceID)\Device Parameters" -Name FlipFlopWheel -Value $mode; "+--- Value of FlipFlopWheel is set to " + (Get-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Enum\$($_.DeviceID)\Device Parameters").FlipFlopWheel + "`n" }

rofrol

const std = @import("std");
const net = std.net;
const fs = std.fs;
const os = std.os;

pub const io_mode = .evented;

pub fn main() anyerror!void {
    var general_purpose_allocator = std.heap.GeneralPurposeAllocator(.{}){};
    const allocator = general_purpose_allocator.allocator();

rofrol

// Build: zig build-exe -O ReleaseFast --strip src/main.zig
// Run: zig build run -- -w 70 -h 40 -m "*" -s 0.07 -c 25
// Version: 0.10.0-dev.3475+b3d463c9e
// Date: 2022/08/08

const std = @import("std");
const mem = std.mem;
const fmt = std.fmt;
const os = std.os;

rofrol

/*
 * André Staltz (@andrestaltz): You will learn RxJS at ng-europe 2016
 * https://www.youtube.com/watch?v=uQ1zhJHclvs
 */

function map(transformFn) {
  const inputObservable = this;
  const outputObservable = createObservable(function subscribe(outputObserver) {
    inputObservable.subscribe({
      next: function(x) {

rofrol

Nvm does not work in vscode tasks, because tasks are run without a shell. .bashrc is not loaded and the nvm command is unknown.

My solution uses a wrapper script around /bin/bash that reads in the correct node version from .npmrc in the project folder.

#!/bin/bash

set -e

if [[ "$2" == nvm* ]]; then

export NODE_VERSION=v$(cat .nvmrc)

rofrol

// function connecting algorithm with outer world
function updateCalculator(event) {
    var expression = document.getElementById("calculator").value;

    var result = calculate(expression);
    document.getElementById('calculatorResult').innerHTML = result;
}

function calculate(expression) {