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Flush emits a normalized result without clearing its accumulator · case 03

Flush emits a normalized result without clearing its accumulator.

Member previewVariant 3 · 3 implementations · 7 checks per implementation

Case contract

Given [sum,count], flush returns [mean, [0,0]]. Empty state has mean zero; all state is cleared for the next window.

Why this case matters

A deterministic toy model isolates one local accumulation contract.

One recorded failure

Sample boundary fixture

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

Boundary fixtureActualExpectedOutcome
flush populated[4.0, [36, 9]][4, [0, 0]]Failed

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