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Extremely concise language deriving from J
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Joe is a concise language derived from J and is designed for code golfing. So, if you're familiar with J, you can easily grasp Joe. Otherwise, let me run through the most important points:

  • Joe is not a von Neumann -language
  • Functions can usually implicitly handle arbitrarily nested lists (arrays).
    • 1+1 2 3 is 2 3 4
    • 1 2 3+1 2 3 is 2 4 6
  • Functions are usually defined in tacit-style, which is closely related to pointless style.

Note: The interpreter uses the Arpeggio module to parse code. You can install it by executing pip install arpeggio.


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