J one-page interpreter fragment (1992)

• handsonscala

  18 648 0.0 TSQL

  Discussion and and code examples for the book Hands-on Scala Programming

  

While this example is pretty dense, a "one page interpreter" doesn't need to be so impenetrable. Here's a one-page (67 line) interpreter for a subset of the Jsonnet programming language, implemented in Scala:

- https://github.com/handsonscala/handsonscala/blob/v1/example...

From the top down, that snippet contains an AST definition, a parser, an evaluator, and an output serializer. This 67-line programming language interpreter is one of the projects in my book https://www.handsonscala.com/ (chapter 20)

• j

  1 4 0.0 C

  j language (Ken Iverson & Roger Hui) from https:/jsoftware.com (by tavmem)

The repository[0] for J is just as unreadable (albeit with slightly more white space). I don’t know how a project is managed like this. Even the file names look obfuscated.

[0]: https://github.com/tavmem/j

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• jsource

  18 640 9.6 C

  J engine source mirror

  

I think this is the main J repo [0]. (Though I’m not sure if it’s any more readable.) Possibly interesting that Tavmem is the maintainer of Kona (open source K3/4). I guess he’s comfortable with all APL/J/K languages.

[0] https://github.com/jsoftware/jsource

• afternoon-lang

  1 0 0.0 C

  A language I made as a self-challenge to create an interpeter in 24 hours.

I actually used this as inspiration for a little self-challenge to write a programming language in 24hrs not too long ago [1]. I didn't get quite as far as I'd've liked to, but nonetheless if you have some time to kill, it was an extremely fun task to tackle.

[1] https://github.com/block8437/afternoon-lang

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