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Overview
DaFoster Projects Articles DaArchive About About Hi! My name is David Foster and my mission is to make the world a betterplace, through the tools of creating software and the written word.
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AI Attribution in Git
When making a git commit I've been looking for a way to record what AI model or coding agent harness I used to help me write the commit, ideally in a machine-readable way. For AI-drafted code that I've reviewed or self-drafted code with significant AI rev
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Oops, I wrote a database
Never write your own database or filesystem. It's way harder than you expect. - some wise programmer 1 Databases and filesystems are hard to write in part because they have very strong requirements around never losing data (durability) even when unusual e
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Designing Software in the Large
A Philosophy of Software Design is my favorite book I've read to date about designing large long-lived maintainable software programs. Here's what I learned: Complexity Complexity is anything related to the structure of a software system that makes it har
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The trouble with the Symbol type
There are a few languages that offer a symbol type , notably JavaScript, Ruby, Lisp, and Erlang. A symbol is similar to a string but guarantees that only one copy of the symbol exists with the same value. In JavaScript you can create a symbol with the cod
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