cdepillabout

let
  nixpkgs-src = builtins.fetchTarball {
    # master of 2021-01-05.
    url = "https://github.com/NixOS/nixpkgs/archive/1a57d96edd156958b12782e8c8b6a374142a7248.tar.gz";
    sha256 = "1qdh457apmw2yxbpi1biwl5x5ygaw158ppff4al8rx7gncgl10rd";
  };

  pkgs = import nixpkgs-src {
    config = {
      # allowUnfree may be necessary for some packages, but in general you should not need it.

sdushantha

Install the required packages

brew install ncmpcpp mpd mpc

Make the.mpd directory in your home directory

mkdir ~/.mpd

maacl

(ns pms.core
  (:require [clojure.spec.alpha :as s]
            [clojure.spec.gen.alpha :as gen]
            [clojure.spec.test.alpha :as stest]))

(comment "This is a small experiment inspired by Oskar Wickströms
  excellent work at
  https://haskell-at-work.com/episodes/2018-01-19-domain-modelling-with-haskell-data-structures.html. I
  wanted to see what would be involved in building the equivalent
  functionality in reasonably ideomatic Clojure. It is also my first

alfonsogarciacaro

Deploying an F# ASP.NET Core app to Azure

Last week I spent a lot of time trying to deploy an F# ASP.NET Core app (a Giraffe app, specifically) to Azure because the information to complete all the steps was scattered in several places. So I'm writing this hopefully it will save the pain to others :)

Preparation

The following steps are mostly taken from this guide and it's only necessary to do them once:

1. Create an account in Azure (or use an existing one)
2. Create a resource group (or use an existing one)

d1egoaz

If you want to learn Scala, I’d suggest:

• Install IntelliJ + Scala Plugin
• Don’t do the Coursera courses yet.
• Don’t do the “red book” Functional Programming in Scala yet.
• Do: http://underscore.io/books/
  • Essential Scala
  • Essential Play
  • Essential Slick
• Do Scala for the Impatient: https://www.amazon.com/Scala-Impatient-Cay-S-Horstmann/dp/0321774094
• The Neophyte’s Guide to Scala http://danielwestheide.com/scala/neophytes.html

djspiewak

Getting Started in Scala

This is my attempt to give Scala newcomers a quick-and-easy rundown to the prerequisite steps they need to a) try Scala, and b) get a standard project up and running on their machine. I'm not going to talk about the language at all; there are plenty of better resources a google search away. This is just focused on the prerequisite tooling and machine setup. I will not be assuming you have any background in JVM languages. So if you're coming from Python, Ruby, JavaScript, Haskell, or anywhere…  I hope to present the information you need without assuming anything.

Disclaimer It has been over a decade since I was new to Scala, and when I was new to Scala, I was coming from a Java and Ruby background. This has probably caused me to unknowingly make some assumptions. Please feel free to call me out in comments/tweets!

One assumption I'm knowingly making is that you're on a Unix-like platform. Sorry, Windows users.

Getting the JVM

ralph-tice

#!/bin/bash -xe

# requires jq and 3 brokers to start
which jq || echo 'no jq found, bye!' && exit 1
ZK_HOST=zkhost1:2181/kafka

# record all topics
/usr/local/kafka/bin/kafka-topics.sh --zookeeper $ZK_HOST --list > all_topics

# generate json for listing which topics to reassign

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

jmglov

#!/usr/bin/env pxi

(ns cli
  "pxi cli.pxi --verbose --bar 42 --hello 'world!'
  {:verbose true, :bar 42, :hello world!}"
  (:require [pixie.string :as string]))

(defn- arg?
  "Returns true if the string is an argument to an option"
  [s]

georgiana-gligor

Create PDF files from Markdown sources in OSX

When [Markdown][markdown] appeared more than 10 years ago, it aimed to make it easier to express ideas in an easy-to-write plain text format. It offers a simple syntax that takes the writer focus away from the formatting, thus giving her time to focus on the actual content.

The market abunds of editors to be used for help with markdown. After a few attempts, I settled to Sublime and its browser preview plugin, which work great for me and have a small memory footprint to accomplish that. To pass the results around to other people, less technical, a markdown file and a bunch of images is not the best approach, so converting it to a more robust format like PDF seems like a much better choice.

[Pandoc][pandoc] is the swiss-army knife of converting documents between various formats. While being able to deal with heavy-weight formats like docx and epub, we will need it for the more lightweight markdown. To be able to generate PDF files, we need LaTeX. On OSX, the s