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How-to guides, tooling tips and real-world advice for developers and product managers tired of broken software. Let’s fix this mess together.

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How-to guides, tooling tips and real-world advice for developers and product managers tired of broken software. Let’s fix this mess together.

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Line drawing of a rocky mountain peak with a base camp and people building structures

Quality you can’t generate: AI is only as good as your constraints

AI changed the cost structure of software. It didn't change the value structure. The value is no longer the code you write. It's the taste, judgment, and constraints you encode into the system that shapes what AI produces.

Dave Mosher

A figure looks off towards the horizon. On the left is a giant robot, on the right a splash of vibrant color, connected nodes and a city unfurl.

Why we're not chasing the AI hype (And what we're doing instead)

Todd Kaufman

Speed is a side effect of making the system work

Doc Norton

Maximize software investment

Rubber duck in fedora and trench coat stands next to a vintage microphone

IndyPy Talk: Pydantically perfect in every way

Kyle Adams

Software tooling & tips

Double Takes

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Double Takes

TDDing with Claude is like having a pair that removes all the failing assertions every time you go to the bathroom.

Steve Jackson

State machines are the answer for those seeking determinism in the era of AI agents.

Dave Mosher

A Slack conversation left Doc reflecting on what bug bashes say about the systems we work in.

Doc Norton

Test-driven development is to programming what double-entry bookkeeping is to accounting.

Neal Lindsay

The fundamental character flaw of the software creator is not the misguided belief that they can solve any problem with software. Instead, it is the belief they can understand how their own software works before they create it.

Steve Jackson

We may need a SaaS appendix for Zawinski's law:

Any SaaS platform attempts to expand until it is a social network.

Matt Jones

Icon illustration showing a speaker blasting noise that overwhelms a person

Work around Rails schema noise with one weird trick

Discover a simple and effective trick to handle unwanted changes in db/schema.rb on your Rails projects. Perfect for lazy developers!

Kevin Baribeau

Software tooling & tips

rails

testing

Airplane taking off

From aerospace to DevOps: 4 surprising lessons for better software

Think compliance is boring? Think again! Discover how lessons from high-risk industries can lead to high-quality, sustainable code that saves time and money. 🚀 #DevOps #SoftwareDevelopment

James Zimmerman

James Zimmerman

DevOps & security

regulatory-compliance

consulting

Getting the exercises in Programming Flutter working

Flutter and Dart have had some updates since the book Programming Flutter was published in 2020. Let's look at the updates that will allow you to get the exercises in the book working.

Josh Justice

Software tooling & tips

flutter

Terminal screen showing Typescript example

A quick guide to TypeScript conditional types

Discover how to leverage TypeScript conditional types to enhance your code's type accuracy and reusability. Get practical tips and elevate your TypeScript skills.

Lewis M Sparlin

Lewis M Sparlin

Software tooling & tips

typescript

automation

javascript

14 tools every Ruby developer will love for performance and debugging

Discover 14 of the best tools and gems for Ruby developers, with top picks for feedback loops, performance, debugging, and data management.

Joé Dupuis

Software tooling & tips

rails

postgres

You need fewer developers than you think you do

Thinking of expanding your dev team? You might want to think again! See how smaller teams are making a huge impact with less hassle.

Test Double Editorial Board

Test Double Editorial Board

Maximize software investment

budgeting

teams

Why legacy code rewrites are the hardest job in software

Legacy applications often have tangled mazes for codebases, with convoluted logic, outdated practices, and patches upon patches. Here's what you need to know about rewriting vs. refactoring your legacy systems.

Test Double Editorial Board

Test Double Editorial Board

Legacy modernization

consulting

budgeting

teams

agile

tech-debt

Screenshot of MUI design system

Finding the right React component in the MUI design system

Discover the differences between MUI components like badges, chips, tooltips, and dialogs. Check out live examples and simplify your development.

Josh Justice

Software tooling & tips

react

You're N.E.A.T.!

Technology is a means to an end: answers to very human questions. We want to connect with other folks who share that belief.

Ways to connect

Test Double Executive Leadership Team

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