Building a Personal Assistant: What I Got Wrong
A couple of weeks ago I wrote that I am the only user of my personal assistant app, so every issue in its tracker is one I filed after watching something fail on my own phone. That sentence is no longer true. My daughter started using it, and she found a limitation I had built in so deeply that I could not see it. Before that, though, some numbers. The app is at version 6.5.0, build 191, with 115 release notes behind it. It is 245 Dart files in lib and 234 test files. The lib/services directory alone holds 124 services. I bring this up because people who ask me about building their own assistant usually think of it as a weekend project - a chat box with an API key behind it. The chat box was the weekend. Everything after that is the reason the thing is actually useful. Three things moved it from a toy to something I open every day: it learns from its own mistakes, it accepts the way people actually talk, and it can look at a photo. Everything else is plumbing, and I will be hone...