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Understanding-j: An introduction to the J programming language that gets to the

46 points • by todsacerdoti • yesterday at 8:40 PM • 9 comments • view on HN

Comments

pixelpoet • today at 12:51 AM

The title stops just short of the

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jbverschoor • today at 7:19 AM

Not the same as (Visual) J++. Great IDE btw

t-writescode • today at 2:36 AM

From the doc,

  _3                  NB. negative numbers start with underscore
  _                   NB. sole underscore is infinity: a number
  __                  NB. negative infinity
Is this a standard I'm unaware of?
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gitroom • today at 4:16 AM

Underscore stuff always throws me off - never quite got used to how J does it. Gotta respect the weird choices though.

prezjordan • yesterday at 11:49 PM

To the author: you can add a .devcontainer directory with a Dockerfile, allowing folks to try this in their browser with GitHub Codespaces

Shameless plug, feel free to copy my setup! https://github.com/jdan/try-j

userbinator • today at 12:33 AM

Unintentional humour with how the title got cut off?