Urs Enzler

@UrsEnzler
413 Followers
108 Following
42 Posts

Software engineering, architecture and design stuff, mainly on .Net, F#, and Azure.

Co-Host of .Net user group Central-Switzerland.

#fsharp
#dotnet
#SoftwareArchitecture

Blogwww.planetgeek.ch
LinkedInwww.linkedin.com/in/ursenzler/

I would favour more efficient solutions, but none are in sight to me. Maybe once, when we have to pay for the real costs of training and running these agent farms, a correction will happen.

The picture Gen-AI created is, however, quite funny. 😄

2/2

I'm not a fan of "let's throw more resources at the problem" solutions. What currently happens in the AI-assisted software development community is, however, exactly this:
From single LLM via single agent (repeat until succeeded) to multi-agent setups (giving themselves feedback to iterate on) - burning tokens like there is no tomorrow (or no token limit, if you care more about your money than the planet 😅 ).

1/2

Die englische Sprache kennt ja “Verschlimmbessern” nicht, weshalb sie stattdessen “vibe coding” sagt.

The 5th and final part of my post series about "to test, or not to test" takes a look at why the shown concepts help with LLMs and concludes the series.
https://www.planetgeek.ch/2026/03/24/to-test-or-not-to-test-part-5-final-words/

Do you like these longer topics, or do you prefer short single posts?

To test, or not to Test? Part 5 – Final words

I wrote code without tests that ran in production without defects, and I wrote buggy code with TDD (Test Driven Development). Time to look back at 35 years of coding and when tests help, and when there is something better. And especially, what these better things are. In the final part, we examine how LLMs...

planetgeek.ch

Part 4 of my blog post series about "to test, or not to test" is about making manual testing easy, and why it matters: https://www.planetgeek.ch/2026/03/19/to-test-or-not-to-test-part-4-make-it-easy-to-test-locally/.

Can you run your system locally and/ or test things quickly, or do you have to wait for a test environment?

To test, or not to Test? Part 4 – Make it easy to test locally

I wrote code without tests that ran in production without defects, and I wrote buggy code with TDD (Test Driven Development). Time to look back at 35 years of coding and when tests help, and when there is something better. And especially, what these better things are. In this part, we look at how to...

planetgeek.ch

In part 3 of my blog post series on "to test or not to test", I take a look at how to recover from a defect if it finds its way into production anyway: https://www.planetgeek.ch/2026/03/17/to-test-or-not-to-test-part-3-make-it-easier-to-recover-from-a-defect/

What are your approaches to recovering easily from a defect?

To test, or not to Test? Part 3 – Make it easier to recover from a defect

I wrote code without tests that ran in production without defects, and I wrote buggy code with TDD (Test Driven Development). Time to look back at 35 years of coding and when tests help, and when there is something better. And especially, what these better things are. In this post, we look at what we...

planetgeek.ch

Second part of my series on "To test or not to test": What if we weren't allowed to write automated tests? What concepts, approaches, and tools would help us?

https://www.planetgeek.ch/2026/03/12/to-test-or-not-to-test-part-2-make-it-hard-to-make-mistakes/

To test, or not to Test? Part 2 – Make it hard to make mistakes

I wrote code without tests that ran in production without defects, and I wrote buggy code with TDD (Test Driven Development). Time to look back at 35 years of coding and when tests help, and when there is something better. And especially, what these better things are. In this part: What would you do if...

planetgeek.ch

I use the great AZD plugin to make working with Azure DevOps PRs simpler for JetBrains IDEs (https://plugins.jetbrains.com/plugin/22319-azd ). One of its many features is an AI-driven PR review. It gave me many good pointers, but it should sharpen its F# knowledge 😀
I don't have to search and check all instances of pattern matching on `Codes` as it suggests (as shown in the image). The compiler does that for me.

btw: we use the PR tooling for releasing, not as a quality gate.

#fsharp #dotnet #JetBrains

To test or not to test? Start of my blog post series about testing and other ways to ensure quality:
https://www.planetgeek.ch/2026/03/10/to-test-or-not-to-test-part-1-why-test-and-at-what-cost/
To test, or not to Test? Part 1 – Why Test? And at what cost?

I wrote code without tests that ran in production without defects, and I wrote buggy code with TDD (Test Driven Development). Time to look back at 35 years of coding and when tests help, and when there is something better. And especially, what these better things are. Why test? For me, there are three reasons...

planetgeek.ch

"We don't need software engineers anymore; AI agents can generate the code from specifications. We only need people who can write a precise specification that can be understood by an agent."

What you need is a software engineer, then.

#AI #LLMs #Agents