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Comment by ibdknox | Hacker News Reader

There's still code here, the text is just for people, so I wonder if this is maybe a misunderstanding.

The language presented is a variant of datalog and is as formal as any other language. If you're curious in the semantics, they boil down to Dedalus [1].

As a simple example of that, here's a clock: http://play.witheve.com/#/examples/clock.eve

[1]: https://www2.eecs.berkeley.edu/Pubs/TechRpts/2009/EECS-2009-...

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For an introduction to Dedalus with less reading, Peter Alvaro's 2015 Strange Loop talk was fantastic.

https://www.youtube.com/watch?v=R2Aa4PivG0g

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Edit: Actually Chris Granger gave an Eve talk at the same conference. It's interesting to see how Eve has evolved since.

https://www.youtube.com/watch?v=5V1ynVyud4M

I think the intent is clear for people with preexisting familiarity with the same ideas. A clojure dev with some datomic. I read declarative, set oriented, database of facts, pattern matching and thought 'the revenge of prolog then'.

This is really nice work. I mean this in the best possible way: I think I could teach my children to use this.

Actually Chris Granger was heavily involved with Clojure. David Nolen gives a great shoutout to Chris Granger and Eve's predecesor, Light Table at minute 17:00 a couple of weeks ago at the Clojure TRE conference:

https://www.youtube.com/watch?v=mty0RwkPmE8

Another implementation of the clock demo

http://www.red-lang.org/2016/07/eve-style-clock-demo-in-red-...

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