viktorklang

trait Enum { //DIY enum type
  import java.util.concurrent.atomic.AtomicReference //Concurrency paranoia

  type EnumVal <: Value //This is a type that needs to be found in the implementing class

  private val _values = new AtomicReference(Vector[EnumVal]()) //Stores our enum values

  //Adds an EnumVal to our storage, uses CCAS to make sure it's thread safe, returns the ordinal
  private final def addEnumVal(newVal: EnumVal): Int = { import _values.{get, compareAndSet => CAS}
    val oldVec = get

jonashaag

Howto use ListFields in Django's admin

Problem

Consider this blog post model:

models.py

digicyc

/* Start by creating a reader for some fake yet conceivable type for executing SQL queries. */

val dbReader: Reader[Properties, JdbcExecutor] =
  for {
    driver   <- read[String]("db.driver")
    uri      <- read[String]("db.uri")
    user     <- read[String]("db.username")
    password <- read[String]("db.password")
    name     <- read[String]("db.pool.name")
    minCons  <- read[Int]("db.pool.minConnections")

masahitojp

import akka.actor.IO._
import akka.actor.{Props, IO, IOManager, Actor, ActorSystem}
import akka.event.Logging
import akka.util.ByteString
import java.net.InetSocketAddress

class TCPEchoServer(port: Int) extends Actor {
  val log = Logging(context.system, this)

  val state = IterateeRef.Map.async[IO.Handle]()(context.dispatcher)

Atem18

Set up Django, Nginx and Gunicorn in a Virtualenv controled by Supervisor

Steps with explanations to set up a server using:

• Virtualenv
• Virtualenvwrapper
• Django
• Gunicorn

marcan

#!/boot/bzImage

# Linux kernel userspace initialization code, translated to bash
# (Minus floppy disk handling, because seriously, it's 2017.)
# Not 100% accurate, but gives you a good idea of how kernel init works
# GPLv2, Copyright 2017 Hector Martin <[email protected]>
# Based on Linux 4.10-rc2.

# Note: pretend chroot is a builtin and affects the current process
# Note: kernel actually uses major/minor device numbers instead of device name

David-Lor

#!/bin/bash

# This script subscribes to a MQTT topic using mosquitto_sub.
# On each message received, you can execute whatever you want.

while true  # Keep an infinite loop to reconnect when connection lost/broker unavailable
do
    mosquitto_sub -h "127.0.0.1" -t "test" | while read -r payload
    do
        # Here is the callback to execute whenever you receive a message:

swickrotation

WIP

This is based on 0 to LSP : Neovim RC From Scratch by ThePrimeagen. Go check it out, big like and subscribe!

This is a learning by doing hands-on writeup. I suggest doing a writeup on your own if you have the time for it.

Steps

Clean Previous Installation