FA-95870 / Postal address normalization / Member archive

Secondary unit extractor: a dangling hash becomes an empty unit · case 05

"21 OAK ST #" returns street "21 OAK ST" with unit "# " instead of leaving the line intact.

Member previewVariant 5 · 3 implementations · 9 checks per implementation

Case contract

Input one uppercase-able street line. Split on whitespace. A final token "#ID" (with at least one character after #) becomes unit "# ID". Otherwise, if at least three tokens exist and the second-to-last token is a designator (APARTMENT/APT->APT, SUITE/STE->STE, UNIT, FLOOR/FL->FL, #), the last token is its identifier. Return [street, unit] with unit "" when none is found.

Why this case matters

Separating the secondary unit from the street line decides whether two deliveries go to the same building and which unit receives them.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
dangling hash stays in the street	`["25 CEDAR ST", "# "]`	`["25 CEDAR ST #", ""]`	Failed

MEMBER ARCHIVE

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

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