1 HN user recommended this demo1 month2017–2025score 1
Years with an HN recommendation, 2007–2026
Cited as a concrete look at Forth in action, including its snapshot/restore dictionary model.
Samuel Falvo II live-codes a text preprocessor and blog engine in Forth over about an hour. It shows Forth's dictionary being snapshotted and restored in place of mutation, and how a small Forth system gets real work done.
“Sam Falvo demonstrates writing a blog engine in Forth.” (HN, 2019)
This is a great resource and running in the browser is great for fast feedback. Thanks for sharing! I just started learning Forth a month or so ago, and I found this video from Andreas Wagner[1] fun to watch. If anyone goes through OP's book and find yourself wanting to see Forth in action, I recommend the video. [1]: [this video]
Clojure is following in the tradition of lisps that do this right. The important bit is the extra indirection on top-level names. I wrote more about it here a long time ago: [link] Also interesting is the other end of the spectrum: Forth. Instead of mutation, offers snapshots and restores of the “dictionary”. See this video: [this video]
Forth's dictionary snapshots and restores instead of mutation
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