dergachev

TLDR: I now add the following snippet to all my Dockerfiles:

# If host is running squid-deb-proxy on port 8000, populate /etc/apt/apt.conf.d/30proxy
# By default, squid-deb-proxy 403s unknown sources, so apt shouldn't proxy ppa.launchpad.net
RUN route -n | awk '/^0.0.0.0/ {print $2}' > /tmp/host_ip.txt
RUN echo "HEAD /" | nc `cat /tmp/host_ip.txt` 8000 | grep squid-deb-proxy \
  && (echo "Acquire::http::Proxy \"http://$(cat /tmp/host_ip.txt):8000\";" > /etc/apt/apt.conf.d/30proxy) \
  && (echo "Acquire::http::Proxy::ppa.launchpad.net DIRECT;" >> /etc/apt/apt.conf.d/30proxy) \
  || echo "No squid-deb-proxy detected on docker host"

DavidVaini

package main

import (
	"log"
	"math"
)

func Round(val float64, roundOn float64, places int ) (newVal float64) {
	var round float64
	pow := math.Pow(10, float64(places))

hvoecking

// Traverses an arbitrary struct and translates all stings it encounters
//
// I haven't seen an example for reflection traversing an arbitrary struct, so
// I want to share this with you. If you encounter any bugs or want to see
// another example please comment.
//
// The MIT License (MIT)
//
// Copyright (c) 2014 Heye Vöcking
//

klalle

/*
 Reads voltage and power from China-style energy meter. 
 Collecting data by eavesdropping on the MOSI-line (master in slave out) 
 between the energy monitoring chip (ECH1560) and the main processor*/
 
const int CLKPin = 2; // Pin connected to CLK (D2 & INT0)
const int MISOPin = 5;  // Pin connected to MISO (D5)

//All variables that is changed in the interrupt function must be volatile to make sure changes are saved. 
volatile int Ba = 0;   //Store MISO-byte 1

twotwotwo

github.com/twotwotwo/sorts is a Go package with parallel radix- and quicksorts. It can run up to 5x faster than stdlib sort on the right kind of large sort task, so it could be useful for analysis and indexing/database-y work in which you have to sort millions of items. (To be clear, I don't recommend most folks drop stdlib sort, which is great, and which sorts depends on.)

While the process of writing it's fresh on my mind, here are some technical details, some things that didn't make the cut, and some thoughts about the process:

Concretely, what this looks like inside:

• Both number and string versions are in-place MSD radix sorts that look at a byte at a time and, once the range being sorted gets down to 128 items, call (essentially) the stdlib's quicksort.

• The [parallelization code

Vigrond

Setting up Jellyfin and Chromecast using Docker, Nginx, and dnsmasq

1/03/2023

• Requirements
• Guide Specific Requirements
• Installing Docker
• Installing Jellyfin and Nginx
• Set up our DNS server
• Block Chromecast's hardcoded DNS server