Architecture on Coffee-Driven Development

Arrowhead anti-pattern challenge

Thu, 07 Nov 2019 18:00:00 +0200

update (2019-11-08): added a bonus contribution from Bob, written in prolog

Just recently I had to work on a huge flow-chart to determine farm types based on the animal transports to and from farm locations. I started out with a small proof of concept but didn’t like the way it turned out. I did some research and learned I was basically creating a so called arrow head (“Arrowhead” anti-pattern ).

While it was nothing new, I never knew it was called arrowhead anti-pattern (or arrow anti-pattern).

Asynchronous Model Validation

Thu, 07 Mar 2019 19:52:10 +0100

UPDATE: Kamil Grzybek commented on my article and pointed me in this direction: a blog post about Async OOP 2: Constructors by Stephen Cleary. While I still my post, I realize it is a bad practice.

Last week I found some great articles about Domain Driven Design. While I have been trying out various patterns and design principles like Clean Architecture and Domain Driven Design I was still finding out how to implement domain events. While doing some exercises I came up with a solution to validate domain entities with asynchronous validations which I want to share.

Using Google Sheet as CMS for your App - Part 1

Tue, 25 Sep 2018 17:00:21 +0200

Imagine you had an easy to understand CMS without too much overhead, just to add translations and a bit of content for your (Xamarin) app. A CMS with an “excel-like” interface, an interface most of your customers would understand without even a training? Say “Hi” to Google Sheets & Azure Functions!

Using MediatR in an MvvmCross App

Tue, 07 Aug 2018 20:30:01 +0200

Intro

A while ago I was listening to a podcast from DotNetRocks about Clean Architecture. Around the same time I read something about a Clean Architecture template which happens to be from Steve Smith, the same guy talking about it on the DotNetRocks show.