Announcing something Kinda FRP-y

[Sage Gerard]

Announcing a new package: kinda-ferpy. Here's a write-up. It implements the spreadsheet metaphor in an expressive way, based on MaiaVictor's excellent PureState library. It's not a complete functional reactive programming interface, but it does conveniently express Racket values as dependent computations.

(require kinda-ferpy)

(define x (stateful-cell 1))
(define y (stateful-cell 1))
(define sum (stateful-cell (λ _ (+ (x) (y)))))

(displayln (sum)) ; 2
(y 8)
(displayln (sum)) ; 9

~slg

[Eric Griffis]

Hi Sage,

This is pretty cool. With a non-OOP option on the table, I might
finally get around to working on an IMGUI-like for Racket.

Have you thought about a reader extension to compress the notation?
The `stateful-cell` function kinda acts like a box and kinda looks
like a `syntax` (or `quote-syntax` w/ kw arg) form, both of which have
special #-prefixed notations. Extending the reader to abbreviate
`(stateful-cell 1)` and `(stateful-cell (λ _ (+ (x) (y))))` to, say,
#?1 and #?(+ (x) (y)), respectively, could be a fun project.

Eric

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[Sage Gerard]

I did not even think to extend it that way! What a cool suggestion. Right now I am working on a macro as defined here, since there are times it makes sense to list dependencies explicitly https://github.com/zyrolasting/kinda-ferpy/issues/2

Now if I could get a #-notation to support explicit dependencies without sacrificing too much readability, I'd probably prefer it over all other variants.
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