FA-47343 / Delimited text / Member archive

Header canonicalization happens after binding · case 03

A structured table violates the declared record or column contract.

Member previewVariant 3 · 3 implementations · 7 checks per implementation

Case contract

Bind a comma-split header and data row. Header keys are ASCII case insensitive and stripped. Reject empty or duplicate canonical names, reserved _extra, and unequal width. Preserve data cell whitespace.

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
canonical names	`{"A": "cellcellcell", "B": " y "}`	`{"a": "cellcellcell", "b": " y "}`	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.