FA-97508 / Knitting and sewing pattern grading / Member archive

Neckband pick-up counter: adjust direction · case 03

The band count is reduced below the picked-up total, leaving gaps.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

Edges [kind, count]: vertical picks up 3 per 4 rows, diagonal 9 per 10 rows, each rounded half-up per edge; horizontal picks 1 per stitch; other kinds -> "error: edge". The rib needs a count of multiple*k + plus; adjust the total up to the next such count (unchanged if already valid). Return [raw_total, adjusted].

Why this case matters

Neckbands and button bands pick up stitches at edge ratios and must fit the rib repeat.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
regression: adjust direction	`[40, 39]`	`[40, 43]`	Failed

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