ChristopherA

Brew Bundle Brewfile Tips

Copyright & License

Unless otherwise noted (either in this file or in a file's copyright section) the contents of this gist are Copyright ©️2020 by Christopher Allen, and are shared under spdx:Creative Commons Attribution Share Alike 4.0 International (CC-BY-SA-4.) open-source license.

Sponsor

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rfaita

Install and configure WSL2 on windows 10

Install WSL2

Using the following link here install the WSL 2 on your windows 10.

Install X-Server

VcXsrv seems to the best choice for X-Server in Windows

jpallari

Enforcing invariants in Scala datatypes

Scala provides many tools to help us build programs with less runtime errors. Instead of relying on nulls, the recommended practice is to use the Option type. Instead of throwing exceptions, Try and Either types are used for representing potential error scenarios. What’s common with these features is that they’re used for capturing runtime features in the type system, thus lifting the runtime scenario handling to the compilation phase: your program doesn’t compile until you’ve explicitly handled nulls, exceptions, and other runtime features in your code.

In his “Strategic Scala Style” blog post series,

sjednac

public final class BusyApp {
  public static void main(String []args) throws Exception {
    final java.util.Random generator = new java.util.Random();
    while (true) {
      generator.ints(1000000, 0, 100).sorted();
      Thread.sleep(5000L);
    }
  }
}

jcemer

This is a proposal for a lightning talk at the Reactive 2016 conference. If you like this, star the Gist.

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Thinking metrics on React applications

In regular websites, it is common to send multiple events to track user clicks. Single Page Applications change the way you look at metrics. This is a talk about a simple pattern we created at Globo.com to manage a metrics layer for http://globoplay.globo.com. The talk will cover how to track user flow using Google Analytics and other services. We solved the challenge of tying metrics and components, keeping information across pages and having global data. Also some React, React Router and React Side Effects concepts like context, higher order components, history state will be covered.

adamw

package com.softwaremill.akka

import java.time._

import akka.actor.ActorSystem
import akka.stream.ActorMaterializer
import akka.stream.scaladsl.Source

import scala.collection.mutable
import scala.concurrent.Await

bastman

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

patarkf

Step by step to install Scala + Play Framework in Ubuntu 14.04 with Activator.

Install Scala

sudo apt-get remove scala-library scala
wget http://www.scala-lang.org/files/archive/scala-2.11.6.deb
sudo dpkg -i scala-2.11.6.deb
sudo apt-get update
sudo apt-get install scala

sirkkalap

##########################################
# To run: 
# curl -sSL https://gist.githubusercontent.com/sirkkalap/e87cd580a47b180a7d32/raw/d9c9ebae4f5cf64eed4676e8aedac265b5a51bfa/Install-Docker-on-Linux-Mint.sh | bash -x
##########################################

# Check that HTTPS transport is available to APT
if [ ! -e /usr/lib/apt/methods/https ]; then
	sudo apt-get update
	sudo apt-get install -y apt-transport-https
fi

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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