Daniel Roy Greenfeld

Daniel Roy Greenfeld

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Recent Writings

Concussion Symptoms Update

Documenting how the head injury incurred on January 16, 2026 continues to affect me two months later.

To return a value or not return a value

I believe operations that change things should always return values.

Stupid human coding mistakes

Should we call mistakes made by humans slop?

Top Terminal Tools

The tools I use in my day-to-day coding efforts in early 2026.

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TIL (Today I learned)

Checkov's Gun

Using PygmentsRenderer with mistletoe as a partial

Default code block languages for mkdocs

Loading .env files with uv run

Merging two git projects

Setting environment variables for pytest

Using SQLModel Asynchronously with FastAPI (and Air) with PostgreSQL

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Featured Writings

The Thirty Minute Rule

What to do when you get stuck on a coding issue for more than 30 minutes.

What's the Best Thing about Working for Octopus Energy?

An in-depth discussion about my employment at Octopus Energy.

Code, Code, Code

I'm often asked by new programmers how they can forge a path into using their skills professionally. Or how they can get better at writing software. In this article I share the secret master-level method to improvement.

I Married Audrey Roy

The story of one of the best days of my life.