Seif Kobrosly seifscape

sdkman vs jenv

Jenv is great, but the JDKs have to be manually installed. If you need more than just a couple of them, you'll want to be able to install them via command line, and sdkman provides this capability very cleanly for java. So... is it possible to work with both sdkman and jenv? Yes and no. Some tricks will allow you to tell jenv about the java versions that are managed by sdkman, but setting defaults (using jenv local 17.0 for instance) does not work very well. Time for a cleaner solution. Sdkman provides all of the same functionality, with more power and a slightly different (but equally simple) syntax. I've switched from jenv to sdkman. Here's my cheat sheet.

Setup

Download and install sdkman. Follow the required instructions after installing. Then, run the config command to enable auto_env support.

echo “Installing SDKMAN"
curl -s https://get.sdkman.io | bash

About

Instructions to obtain WireGuard details of your NordVPN account. These can be used to setup a WireGuard tunnel on your router to NordVPN.

Source: https://forum.gl-inet.com/t/configure-wireguard-client-to-connect-to-nordvpn-servers/10422/27

Prerequisites

If you have any linux machine, use that or install a vm if you don't have one.

Get their official linux app installed. Make sure you have wireguard installed too. And set the used technology to Nordlynx by running nordvpn set technology nordlynx

Nix on macOS Catalina

I'm writing this gist for my own records but it might help someone else too.

Installing Nix

Support for Catalina has improved a lot since the update was first rolled out.

Note: See the NixOS manual for discussion of the --darwin-use-unencrypted-nix-store-volume option.

Let's Destroy C

I have a pet project I work on, every now and then. CNoEvil.

The concept is simple enough.

What if, for a moment, we forgot all the rules we know. That we ignore every good idea, and accept all the terrible ones. That nothing is off limits. Can we turn C into a new language? Can we do what Lisp and Forth let the over-eager programmer do, but in C?

Add Git Branch Name to Terminal Prompt (zsh)

Updated for MacOS with zsh

Catalina
Big Sur
Monterey
Ventura
Sonoma

	import SwiftUI

	private struct OnFirstAppear: ViewModifier {
	let perform: () -> Void

	@State private var firstTime = true

	func body(content: Content) -> some View {
	content.onAppear {
	if firstTime {

	import Foundation
	import HealthKit

	struct WorkoutSplit: Hashable {
	let label: String
	let distance: HKQuantity
	let duration: TimeInterval
	}

	extension WorkoutSplit {

	//
	// ContentSizePagingCollectionDelegate.swift
	// CardsCarousel
	//
	// Created by Daniel Carlos Souza Carvalho on 2/20/21.
	//

	import UIKit

	/// Horizontal paging for collections based on the content size

	#if 0
	IOAccelContext2::finish_fence_event() race condition OOB read/write

	This is a method exposed to user space, it takes a kernel read-only shared memory
	(type 2 via clientMemoryForType()) address and treats it as an IOAccelEvents Array.

	The user supplied index is checked against the IOAccelEvents array bounds,since there are no
	locks held in this method,it is possible to change the array bounds by calling
	IOAccelContext2::clientMemoryForType() again in a separate thread, this will expand the size by
	multiplying the older size by 2, but we still have a reference to the old shared memory address

	defaults write com.apple.dt.Xcode ShowDVTDebugMenu -bool YES
	sudo mkdir -p /Applications/Xcode.app/Contents/Developer/AppleInternal/Library/Xcode
	sudo touch /Applications/Xcode.app/Contents/Developer/AppleInternal/Library/Xcode/AppleInternal.plist

	# Don't forget to restart Xcode