Forest Anderson AngelOnFira

Comparison chips (SoCs) table for ESP8266/ESP32/ESP32-S2/ESP32-S3/ESP32-C3/ESP32-C6

A minimal table to compare the Espressif's MCU families.

	ESP8266	ESP32	ESP32-S2	ESP32-S3	ESP32-C3	ESP32-C6
Announcement Date	2014, August	2016, September	2019, September	2020, December

Introduction to associated types

One of the most useful things in typed programming languages is generics. Generics allows you to write code that works across multiple types while still being checkable by the compiler. Even better is that with many languages like Rust and C#, generics have a distinct performance advantage over runtime casting. However although generics are extremely useful, many programming languages that have them don't allow for convenient ways of expressing them, especially for traits/interfaces. Like in Java if you want a generic interface you are forced to use the same Name<Type1, Type2, Type3, ...> syntax that you would use for a class. However, that often leads to ugly overly-verbose code.

Here's an example: Lets say that you have two traits/interfaces Foo and Bar that depend on three subtypes and you wanted a function that takes in any implementation of both Foo and Bar and returns the first type of Foo and the third type of Bar. The traditional Rust version that is similar to o

Reverse Port Tunneling with EC2

Reverse port tunneling is used to give a user outside of a networks firewall accesst to a computer inside the firewall where direct SSH connections aren't allowed. It works by the in-firewall computer SSH'ing to a middleman computer that then forwards incomming SSH connections on a given port to the firewalled computer.

Setup the middleman

Get an ubuntu EC2 instance
Download it's security keys (both in-firewall and out-firewall computers will need the private key)
Setup the security group to allow connections on port 10002
SSH into the middleman and add: GatewayPorts yes to /etc/ssh/sshd_config

	shader_type spatial;
	render_mode cull_disabled, blend_mix,diffuse_burley, specular_schlick_ggx;

	uniform sampler2D u_terrain_heightmap;
	uniform sampler2D u_terrain_detailmap;
	uniform sampler2D u_terrain_normalmap;
	uniform sampler2D u_terrain_globalmap : hint_albedo;
	uniform mat4 u_terrain_inverse_transform;
	uniform mat3 u_terrain_normal_basis;

	# Simple example to deploy traefik with consul connect enabled.
	# For simplicity the job includes traefik as well as the backend service.
	# Please note that traefik currently only supports connect for HTTP.
	job "traefik-consul-connect-demo" {
	datacenters = ["dc1"]

	group "edge" {

	network {
	mode = "bridge"

	use oauth2::reqwest::http_client;
	use oauth2::{basic::BasicClient, AuthUrl, AuthorizationCode, ClientId, ClientSecret, CsrfToken, Scope, TokenUrl, TokenResponse};
	use std::io::{BufRead, BufReader, Write};
	use std::net::TcpListener;
	use url::Url;
	use serenity::http::Http;

	fn main() {
	let client = BasicClient::new(
	ClientId::new("544523578855391241".to_string()),

	import os

	import boto.utils
	import boto3
	import requests
	import datetime
	import time


	def get_contents(filename):

	fallocate -l 4G /swapfile
	chmod 600 /swapfile
	mkswap /swapfile
	swapon /swapfile
	sh -c 'echo "/swapfile none swap sw 0 0" >> /etc/fstab'