191 day19 part1

○ Planned This feature is planned but not yet implemented.

OWED: AoC 2015 day 19 part 1 (distinct molecules after one replacement).

Failure Output

error[PARSE003]: single continuation branch 'distinct' carrying a payload is a one-variant tag union — declare the single output as a bare return instead: `-> i64`
  --> tests/regression/810_AOC_2015/810_191_day19_part1/input.k:12:1
    |
 12 | pub tor count-molecules { molecule: string }
    | ^

Code

// AoC 2015 Day 19 Part 1 — distinct molecules after ONE replacement
// (statement: HOH with 3 rules → 4). Koru: match splits rule lines from
// the molecule line; set-of-results and replacement scan are leaves.
// Ledger: result set ← collections; rule split ← groups.

import std/io
import std/fs
import std/regex

pub tor add-rule { line: string }

pub tor count-molecules { molecule: string }
| distinct i64

std/fs:read-lines(path: "tests/regression/810_AOC_2015/810_191_day19_part1/input.txt")
! line l |> std/regex:match(l)
    | `[A-Za-z]+ => [A-Za-z]+` _ |> add-rule(line: l)
    | `[A-Za-z]+` _ |> count-molecules(molecule: l)
        | distinct n |> std/io:print.ln("{{ n:d }}")
    | no-match |> _
| done _ |> _
| failed e |> std/io:print.ln("FAILED {{ e:s }}")

input.k

Supporting Files

H => HO
H => OH
O => HH

HOH

input.txt

Expected output

Test Configuration

MUST_RUN

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