FA-47837 / Delimited text / Member archive

Projection validates only selected row widths · case 02

A structured table violates the declared record or column contract.

Member previewVariant 2 · 3 implementations · 10 checks per implementation

Case contract

Select physical cells from a rectangular table using one-based inclusive row and column intervals. Omitted end means last; zero and reversed or out-of-range bounds reject. An empty table accepts only both default [1,null] selectors and produces empty output. Preserve selected order.

Why this case matters

Delimited interchange needs explicit framing, schema and field semantics at ingestion and emission boundaries.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
ragged	`[["a"]]`	`null`	Failed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.