The "each each" could be replaced by the more generic L:, giving
validIds (((alpha i. ]) { alpha |.~ [) L: 0)"0 '-' cut each validCodes
but this loses the nice data structure correspondence and needs an
extra rank-zero specification (which comes for free with "each").
Alternatively, how about moving the '-' transformation into the decoding
section:
validIds ((('-' , alpha) i. ]) { ' ' , alpha |.~ [) each validCodes
┌────────────────────────────────────┬────────────────────────────────┐
│rampaging projectile rabbit training│onsumer grade flower acquisition│
└────────────────────────────────────┴────────────────────────────────┘
--
David
Joe Bogner <[email protected]> writes:
> I'm back to working on Advent of Code. I'm on day 4, a bit late I know.
>
> I have "each each" in my solution which doesn't feel right to me.
>
> Here's a reproducible case:
>
> validCodes =:
> ('mvhkvbdib-kmjezxodgz-mvwwdo-omvdidib';'zydfxpc-rclop-qwzhpc-lnbftdtetzy')
> validIds=: 837 171
> alpha =: 'abcdefghijklmnopqrstuvwxyz'
>
> validIds ((alpha i. ]) { alpha |.~ [) each each '-' cut each validCodes
>
>
> ┌──────────────────────────────────────┬──────────────────────────────────┐
> │┌─────────┬──────────┬──────┬────────┐│┌───────┬─────┬──────┬───────────┐│
> ││rampaging│projectile│rabbit│training│││onsumer│grade│flower│acquisition││
> │└─────────┴──────────┴──────┴────────┘│└───────┴─────┴──────┴───────────┘│
> └──────────────────────────────────────┴──────────────────────────────────┘
>
> Does the "each each" feel out of place? If so, how would it be eliminated?
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