Code is a cost and has a negative value, yes I said it finally. “Most startups die because they build the wrong product. The core risks are rarely technical; if no one wants the product, building it well won’t change the outcome.” - Zach Tellman In 2013, I went to the 2nd edition of DevDay. This was my first conference ever in the different city. It was a blast. The team behind it recently started a new event - DevConf - knowing Rafal and Michal it will be great, check it out. In 2013, I remembered on...

Simulating microservices using F# and Suave.io Posted on by Michal Franc I have this small hobby project called Overseer. It is a tool used to debug and troubleshoot microservices. I was planning to use it in production, but because that is the only prototype. I decided to use it with simulated services. This way it will be a lot easier to create many different ‘test’ scenarios. The current solution for spawning those ‘tests services’ is implemented in Suave.io and F#. Why these technologies? I just ...

Take care of your test code Posted on by Michal Franc As developers we tend to write complicated unit tests that are hard to read and maintain. Maybe it comes from the feeling that test code is not a proper code ? There is some magic in writing ‘proper’ unit tests. Using word proper might not be even suitable here because how do you define ‘proper’. It is the same problem as with the definition of ‘unit, everyone has his own definition that depends on the context. Code below feels like not ‘proper’ ...

TDD / Unit Testing big list of learning resources from basics to advanced topics Posted on by Michal Franc One of my fellow dev friends asked about a set of links, books, screen-casts related to TDD / Unit Testing. He wants to expand his knowledge. Instead of sending him a private message, I thought that it would be great to just create a blog post with all the resources, I used in the past to learn.Basics Presentation - Video: Unit Testing and TDD – Why You Should Care and How to Make It Happen By R...

Boost your dev productivity with cmder + ConEmu Posted on by Michal FrancUnix world and awesome tmux In unix world there is a nice ‘tool’ ‘tmux’ - terminal multiplexer. With ‘Terminal Multiplexer’, you can nicely split up screen and have multiple terminals visible in front of your eyes. While working with python, on one of the screens I had vim running, then there was a screen for interactive Python plus small terminal to issue git commands. I could easily jump between ‘screens’ and also have diffe...

TL;DR; Feedback is crucial for your career. Be proactive, get out of your closet and ask for it!

Game programming with F#, C# and SFML – GameLoop Posted on by Michal Franc I am a F# apprentice. The best way to learn new language is to do some project. That’s why I have started to code one game idea that was following me for some time. Core concept: sci-fi settingroguelikeinspired by: dwarf fortressprison architectcataclysm dda Because I don’t care about the graphics but the game-play, the graphic I am going to use will be an ASCII styles tile set. You know symbols, characters, letters and some...

I have started learning F# again, thanks to @isaac_abraham and his great presentation in my company. This time hopefully, I will move past the “WTF”, barrier and move to “AHA” moment. I am ready to finally start serious F# learning with couple of milestones like: project euler, tool, web-app, complex project. I will try to document whole process on the blog. I want to force myself and learn new functional paradigm. Hopefully it will give me a new way to loo...

TDD – commit by commit String Calculator Kata (III) Posted on by Michal Franc Previous post in the series – TDD – commit by commit String Calculator Kata (II) In the previous post I did a cleanup phase and added one feature to the String Calculator. The kata is not finished yet.Step VIII – Different Delimiters String Calculator should support different delimiters. Previous solution was just a hard-coded hack, still it was good enough solution. There wasn’t any requirement that would suggest a need f...

TDD – commit by commit String Calculator (I) In this series I want to share my approach to TDD. I will do a simple TDD kata, sharing with you all my decision and thoughts. It’s called commit by commit beacuse you will find here links to github with each step. There will be a commentary to each one of these. I encourage you to comment and show me the flaws in my “style” of TDD coding. I also want to learn from you. I do know that my approach has its problems and there is allways a wayt to do something b...